Looking into getting a GK MB200 mainly for headphone & practice. Already have a 700RBII but would like to increase my practice time with something I can plug my iPhone into and play thru headphones anywhere in my house. Often my free time to play is later at night, and contrary to my impulses and natural instincts, not the best time to rattle the house... or so I've been told. Anyone have any other suggestions? Less expensive, comparable features, etc. Definitely like to play along to iPhone so must have approriate input. GK has been my go to brand, and I like the idea of the 200 Watts this box offers, though I doubt I'd utilize it much as an "out loud" option when I have the 700RBII.