Well,
The board i have used, and have liked the most up to now, is the loose TT 180(
http://www.loose.it ). I am going to order the AX 160 and the EX 138, I am sure I am going to love them. The TT 180 rides so smooth, and is extremely well constructed with a lot of thought put into accesories, details etc. It has a really sharp rail so it can take a lot of wind and edge really hard. You can see some pics here, in the loose TT 180 folder, feel free to look at the other folders:
http://photos.groups.yahoo.com/group/kitesurfmexico/lst
Here is the direct link:
http://photos.groups.yahoo.com/group/ki ... %26.view=t
I was with a cabrinha pro rider in March, and he told me he loves the prankster and spoiler, but that he tried the slingshot jarvis board, and that it was the best board he had ever ridden. So, you should try one of those out too. I have heard no negative comments about the loose boards, you may think I am biased, I sell loose boards in Mexico, but it is my honest opinion. I have heard only great things about the wavetrays from underground as well.
If you need any more info, ask,
Hope this helps,
Andres