The "large amount of configuration problems" are not are far from solely the result of any weakness in wifi. Wifi has only a few minor caveats, such as positioning, and most of them are avoidable. So don't be put off.
You have not stated whether you intend to stream large files, but if you prefer Ethernet anyway, this will not matter. Therefore, you can safely ignore any form of boosted, Pre-n or MIMO proprietary system and stay with 802.11g (54Mbits per second) which often has the friendly name of 54g. My preference, in order, is the Belkin 7632 (set quite a few of these up, including my own), any 3Com or the Linksys WAG354G (not the GS, which is boosted to 125Mb). I like the price of the 3Coms in particular and they are well-made, with extensive config options (something which I value highly).