I've been a huge time equipe TBT fan since 1988, and I was happily using them until the cleats became increasingly hard to find. I did try some impact pedals way back in 2004 and absolutely hated them. I just found their narrower q-factor caused my ankles to rub against the cranks, so after one ride I reinstalled the equipes..
Due to having the bio mechanics of lame donkey, I ride mostly speedplay zero pedals with long spindles, fore-aft adaptors slammed on re-drilled bont shoes that give me an almost midfoot cleat position. For a bit of nostalgia I occasionally break out my time equipe's, but after several years of riding in an almost mid-foot cleat position my tibial anterior muscles have turned to mush so riding them now feels unnatural. Plus the spring tension constantly trying to re-centre my feet eventually drives me nuts..
I really should sell them on here or e-bay, but I can't bear to part with them for some strange reason...