Good Read. I Use The Asr 10 and a Mpc 2000xl both together and each on their own as well. It def boils down to the sound quality that the sampler engine puts on the sound that enters it. The Mpc is my lethal weapon for drums in almost every case where as sometime's i prefer to run my actual samples/chops through my asr10...then record/track each part from its seperate machine into Pro tools.
But really with all the new technology out there people take fruityloops and a midi keyboard(witch i also have) and some plug ins and make the shit sound identical....these days you have 'Tape' plugins and 'static/distortion' plug ins and all these other things that are meant to replace this 'sound' we are talking about...I dont really do things that way although i could if i wanted to. I also use a TEAC A4300sx reel to reel when i really want to 'dirty' somthing up. The preamps in it are great.