I agree that a coaxial is a good starting point. I still fly my Lama V4 in the basement on bad weather days. If i had it to do over again i would probably go with a 450 or 500 (if affordable) EXI which is a Trex clone. The investment is lower, they are nice heli's for the price. If it works out for you then move on to a Trex of your choice. Just my 2 cents.
http://www.xheli.com/exi.html