^ I've really enjoyed the Team Surprise songs. I've only listened to half of them but some are fantastic. Juuryoku Sympathy is a fantastic upbeat group song, as the TV performance of it really showed. Souyoubi no Alice is one of my favourites of the year . Tomochin's outfit in Sono Mama de is fantastic and has made her rise up my rankings.
There's also two unit songs featuring both Mayuyu and Paruru
The point about not being able to buy them easily is one of the main reasons I haven't checked out all the songs, I don't want to have to shell out so much for them and resellers tend to sell for around the asking price without the 3 photos.
I'm quite glad that the new teams are performing some of the songs in their stages, but its a shame its not the original line-ups. Like most b-sides and album tracks, most of these are songs destined to be rarely performed live, no matter how good they are.