glad to hear your wife loves wakeboarding! If you want something thats not pricey, but pretty, have you tried looking at used boards in your area?? I always sell my used boards because I keep them in good condition, and it can be a great way to get a good package for a low price.
If not, Id say go for an 06 model. Try to get a beginner friendly board (LF Diva & Angel, HL Divine & Eden, Ronix Krush but only 07 model) I dont know much about CWB boards, so I cant say about those. Of the boards I mentioned my favorite would be the LF Angel, then the Ronix Krush. Both are very lightweight and very good boards to start progressing on.