Bought two of these both with boot loaders and auto reset. One 3217 and one 3227. Great documentation available and worked exactly as expected with the Arduino IDE. Cool project and lots of fun. Thank you!

Note: I have revised my evaluation of the Documentation upward from 4-star to 5-star. After a bit of sober reflection, I decided I wasn't being quite fair because I've been "out of the game" for a few years now. Most customers for this product are probably current and active in Embedded and Arduino, and would have easily figured out the few things that puzzled me. Besides, the stellar, over the top support that Spence has provided has very effectively filled in any gaps that may exist in the docs, and observing how proactive Dr. Azzy is with maintaining and updating his software and products, I'm sure my stumbles will eventually end up in improvement in the docs as well... And now, for my story:

Thanks to government stupidity (shutting down and destroying the supply chain), I've had to launch a complete redesign of our flagship product's electronic PCB... I thought I was going to have to go with some weird import part, or (gag!) an Intel chip?

Late last year, I discovered there was a new Atmel series of parts out, and (better yet) there were even modest quantities in my target 32pin SMT package actually available to buy! So, I started looking around for a suitable development board. I wasn't thrilled with the Microchip dev board offering, but I found Dr. Azzy's sweet little boards here on Tindie. I ordered two right away, along with their color-coded pin sets.

While waiting for the boards to arrive, I contacted Spence with questions about his opinion of the viability of these parts (I had seen some scary comments about errata). His quick and comprehensive answers reassured me that I was on the right track, so I did a risk buy of the processors I'll need for my first build-out (before someone else could snap up the dwindling supply... thanks a bunch, Uncle Sam...).

The boards arrived quickly by Priority Mail; then life intervened, and I had a buncha other stuff to do. Well, this week I finally got a "round tuit" and started working with one of the boards. At first I just couldn't get it talking via the Arduino IDE. I suspected I was having problems with my Macbook Air M1 and FTDI driver latency...

Once again, Spence was quick as lightning to respond to my questions and issues via Tindie messaging. With his feedback and guidance, I got both of the boards up and operating, not only via the standard Arduino serial interface, but also via UPDI, a very sweet and fast serial programming option.

I can scarcely begin to tell you how pleased I am with this product, and even more so with the professionalism and strong and kind support of Spence Konde, the product developer. Between his fabulous and very detailed documentation, and his Johnny-on-the-Spot response to my cries for help, I have been blown away with the quality of his operation. You don't see enterprises this good every day...! My hat's off to Dr. Azzy and his entire operation! First Class all the way!

I will certainly be shopping here again and watching for new developments...

PRO TIP: Avoid the trouble I had - be sure to download and install the latest version of Dr. Azzy's “DxCore by Spence Konde” Arduino Board Manager Package here:
http://drazzy.com/package_drazzy.com_index.json

Documentation is monumental, considering he's supporting anyone with a AVR128DX. Buy his boards to support the DxCore library!

Arrived as fast as you can expect with USPS and was shipped promptly.

I soldered the FTDI header on there, plugged in my adapter and I was off. Board worked first time no problem (with Blink, I didn't give it anything fancy).

I'm giving him a 5 for comms, since even before I bought a board, he's been engaged with anyone asking questions on GitHub discussions.

https://github.com/SpenceKonde/DxCore

I wanted to get started with the new(er) ATtiny 1-series and Spence (Dr. Azzy) had everything I needed! His "core" firmware is amazing, and the documentation is unrivaled - going beyond the core functions and deep into various chip features and bugs. His 1614 dev board was perfect for my initial breadboard protos, I ended up buying 3! Well made, thoughtful design and features. Thank you, Spence, for all you've done or the community!

Congrats to Spence Konde. Not only this board but also the library provided by the author for the Arduino IDE are nice resources that I am using to migrate a project from ATmega2560 to AVR128DA64.
As an improvement, I suggest replacing the silkscreen numerical sequence of pins (1, 2, etc) with the more meaningful port names (PA0, PA1, etc).
And I'm also looking forward to the inclusion of the DX family in the Visual Studio IDE which I personally prefer over the Arduino IDE.
My choice for the cheaper international shipping method was more expensive and a little longer than shopping from China, but they don't sell Azduino boards... ;-)