http://www.amazon.com/M-Audio-OXYGEN49MK3-Oxygen-MIDI-Controller/dp/B009ZUKY52/ref=sr_1_1?s=musical-instruments&ie=UTF8&qid=1384975549&sr=1-1&keywords=m+audio+oxygen
or
http://www.amazon.com/M-Audio-Axiom-49-Controller-Semi-Weighted/dp/B003V34WKC/ref=sr_1_1?s=musical-instruments&ie=UTF8&qid=1384975572&sr=1-1&keywords=m+audio+axiom+49
both good quality will last and have lots of knobs for midi custimization