as best i can tell, as far as importing stuff into poser. all programs are pretty much equal. everything i've ever seen can export to a file type that poser can import...except maybe bryce, but its not really a modeling program. You really need to find an interface and workflow that suit you. Shade (my personal favorite) is very much like technical drawing so if that is how you approach making models it may be the right fit for you. if your more into sculpting models other programs may fit better... or you may still find shade will suit you. Your best bet is to download some free programs and demos and give them a try.

My Homepage - Free stuff and Galleries