I really like my NC but, honestly I think if I were to do it all over again I would do two things differently. I would either go all out and get the LED NC because overheating really was a big issue for me when I first set it up. I had to add a refugium to solve my heating issues. Or, I would just ditch the NC all together and just get a regular 29g tank and some nice T5 lights.
There are two problems IMO with the NC, one is that it's a 28g tank but, there's really only like 20-22g of actual space in the tank and also the front glass is bowed so it makes looking into it funky.
As far as TBS goes, I don't have anything bad to say at all. Richard the owner was a great guy to deal with, very personal service. The stuff he sells is great quality and he includes a nice CUC into his package. The only thing you'll have to worry about is hunting for mantis shrimp and bad crabs when you first set it up.