I'm a satisfied UAD2 user since almost 10 years, so I'm not new to the system.
I've bought this Octo card to replace my old Duo, in order to benefit from its much increased DSP power.
While older Universal Audio plugins can still be ran in many instances even on a Duo system, latest ones are very DSP hungry, so the Octo is the best choice when you want to run large mixing session with a lot of heavy plugins such as latest channel-strips and/or tape emulations.
Quality of this card is like are used to for every other Universal Audio product: well built, very straightforward to be installed and configured, it simply works.
I just had to remove the Duo, plug the Octo, power my computer, and re-authorize the system: in 5 minutes I was ready to work again, with 4x the DSP power I had before.
Thomann service, as usual, is fast, professional and kind; they are official Universal Audio dealers, and that's an added value in case of eventual future need of support.
Top product from a top reseller.