Need A Good Router For Given Use

I'm on my third new router in 3 weeks. I'm using the Netgear wndr3400 right now, it seems to be pretty good but I've noticed my laptop disconnects randomly and reconnects quickly. Its not a major problem but when I'm reviewing my cameras motion recordings for the day through my network it starts to drop as low as 2mbps when I look at my Network device. I cannot find one that fully fits my needs. I've tried expensive routers and mid range but it seems like my old $50 router is all that continues to work. I keep getting routers that have the wireless drop out completely until I go reset it, or the NAT settings for the 360's will be moderate. I cannot fix the NAT for all 360's, just one (or havent found a way to fix it for all) If anyone knows of a good router that can handle this type of use please suggest one, I'm willing to spend some money if its going to work.