What do you think is better for 1/35 armor diorama bases. Custom Dioramics or Verlinden?

I think you won't be dissapointed with either manufacturer. The quality is very good for both. I would use cost and 'fit' as deciding factors. Which is affordable and which one fits your need.

I just found a new diorama base company. Its called Cromwell Models. does anyone know anything about them?

Cromwell makes some very nice stuff as well. I have bought and built several different figure kits of theirs. They include a small diorama/vignette base with them. I haven't seen any diorama specific stuff, but based on what I have seen from them in the past, I would buy them should I come across them. "Q"

one more thing have anyone ever a jaguar diorama before, i just got one and im wondering how hard it is to build?