Though I haven't heard it myself, the phonak pfe perfect bass may be another option. Ask clieos about it, as he has tried the pl50, a151, and the pfe perfect bass.
I think joker will get them out eventually, but there's no rush. There has been
alot written about both the TF10 and IE7 on headfi. Several years worth of posts, impressions and reviews. I think joker will get to them after he gets done with his backlog - though oddly enough it seems to be growing rather than getting smaller
. But personally, I'd much rather get info of lesser known or available earphones than ones that have been so exhaustively covered.