If you're looking for a durable quad in this size, I think best ones you'll find are the HMB line by MultiRC. The HMB stands for 'Hold My Beer', the statement often made before someone tries something spectacularly dumb
http://multirc.com/hmb-235-v2/
It costs a few bucks more than the HK or BG ones, but it's proven nearly indestructible - and if you do manage to break something on the frame, the guys seriously want a picture and to hear your story - they will quickly warranty replace either of the plates if you can do that.
Check out some of the crash videos for this thing on youtube for a good laugh - full speed into fence posts, sides of buildings, 100 foot drops onto concrete, etc.