I haven't heard of anyone doing "cartoonish" in Bryce...but maybe it is doable? Poser can be imported but only with a LOT of work but sometimes it is worth the effort (my gallery here has some Poser-to-Bryce renders, but I'm just a hobbiest mind-you). Aside from Bryce; Poser does have the Scetch Render, I haven't played much with it. There are however some great Sample presets in Free-Stuff and a few just showed up at RuntimeDNA.