Last night my T.I Jazz flats came in and this morning I strung up the btb with them.
All I can say is WOW!!!!!!!!!!!!

Man these strings are AMAZING. THey have that smooth low down groove sound for those slow woship songs and if you roll back the bass and mids a bit and bump the trebble you get a nice slap tone. Now I wont' lie, you won't get the same ear piercing tone you get from round wounds when slapping, but they sound GOOD. My D'addario xl170-sl's (in stainless steel) had a MEAN pop to them, but they couldn't get mellow like these jazz flats. It just wasn't possible. Not to mention you don't get any finger sound off the strings.
I'll probably just leave this set on this bass until they either break of the bass burns. No way their coming off.
The string tension is about the same as my D'addario xl170-sl as well, so no worries about breaking your fingers tryign to pluck them. Just an awesome string!!!!
If you have the cahs I say you need to try these out ASAP!!! They're definately not cheap, but more then worth it and kick the tial of all the other strings i've tried.