Crossover-less Speakers

I'd like to hear from those of you who transitioned to crossover-less speakers. I have a pair of Thiel CS 2 2s. I like 'em but I'm curious about the full-range crossover-less speaker types. I'd like to know what speaker you have and what speaker you traded up from. Are you getting the full range from your spkrs? Are you experiencing any peaks and valleys in the frequency response? Are you happy with the lows or are you augmenting with a powered sub? Thanks.