Well, those are some really nice speakers! First I must ask you, what is your budget? I would personally use a nice receiver for your B&W theater setup, something such as the Denon AVR-4520, add in a nice Emotiva amp, or perhaps a Paradound Halo 23 if you want to step it up a notch. That would really make those B&W's sound excellent!
For your Martin Logan's, (I need to know your budget for this as well), I would go with a nice integrated amp from perhaps Musical Fidelity, or perhaps use a Wyrd4Sound amp and pre-amp or use a Benchmark DAC1 as a pre-amp into a nice Parasound amp, or you could really step it up a notch and go with a McIntosh MA6600 integrated! Any of those should perform well, and to be 100% honest, I doubt that you could even tell any of those apart. Good luck!