Personally, I think the Tholian set is better than most anything else I have seen about "Tholians".
Like these ugly things:
http://www.sfbnexus.com/Tholian/t-pc-a.jpg
http://www.sfbnexus.com/Tholian/T-CA-M2-A.jpg
Or this:
another ugly one
or this ugly mug
This one isn't too bad, though:
okish
Oleg has done much better work than 99% of the half-arsed attempts at Tholian ships out there, I think. No need to discount his work like this... they look just as "Trek" as any of AT's sets.