This has probably been covered elsewhere, but I've been using the elite trainer (the extreme, reinforced one) and it's almost perfect for me. Almost.

1. I find the heel a little loose, loose enough to think the shoe might get sucked off in a patch of bog
2. Stack height (heel), bit wobbly? Not very forgiving of a misplaced foot placement. Feel more likely to turn an ankle.

The racer version looks like its a bit lower stack, slightly narrower fit. Has anyone used both, what (if any) are the differences?

Thanks!