I got the Ultimate Ears 700s a couple of weeks ago, and they work perfectly with the bumper.
The only downside is that they don't have controls or a mic on the cord, so you lose the convenience of the original Apple earbuds, but the vastly improved SQ makes up for it.
I have been looking around at various adapters which place the controls and mic inline, but haven't found one yet that looks appealing. They all seem to add an exra 2 feet to the cord, and also look incredibly cheap/crappy.
I did see someone who recommended grafting higher quality earbuds onto the original apple cord, which would be a simple task, but I am hesitant to hack up my $200 earbuds(although I got them for $70, missed out on the freebies by a few minutes)