CBB works great for me and is easy to change templates and stylesheets and the likes. It's quite powerful as well. I'm sure there is something that it doesn't have that phpBB or IPB does, but so far, on my sites, it fits the bill quite nicely and I don't have to worry about compatibility issues.
What is it about newBB that you don't like? You might try using CBB as was suggested. I must admit that every module I've implemented has required me to work on the templates to get it to look the way I want it to. I expect it may be the same for you. However, changes to look and feel are sooooo much easier in XOOPS than the Nukes and others.
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