Why do you hate the iD L?
I've heard the V3 is great.
I really like the V2. It has a lot of great characters, plus stuff in the shop is pretty cheap.
The V4 everyone seems to like. Very cute, lots of characters, easy way of deciding which adult you want.
I wouldn't get the 4.5. The characters are... um... well, not cute.
I hate the V5. I gets SO boring after a while, definately don't get that.
The 5.5 is better than the 5. Better characters, more games, and you actually know what you're buying...
The music star is only for people who have a lot of time on your hands, as it's pretty attention-needing.
The Tama-go is a really good version, but be prepared to buy lots of figures and carry around a big Tama.
My favorite's the iD L, so of course I'd reccomend that, but I guess not if you hate it...
Need more details on any? I've played all the connections except V1/3.