There are product life cycle databases, but you probably have to pay subscription to get into them.
Stay away from Maxim, and stick to the biggest manufacturers: TI, ST, Fairchild, etc. Select newish looking parts (datasheets will probably be newer than 2010 copyright / last update), with good specs -- avoid unusual package, unusual purpose, or oddly spec'd parts. If you aren't seeing specs you want, don't use it -- there's probably a bad reason they're hiding it. Some of the most common pitfalls on regulators are tolerable ESR range, bias current (total supply and under what conditions, input pins, etc.), and compensation (prefer an external comp part if possible). If you can't avoid an internally compensated part, don't try to make variations on the suggested / app-note circuit, do exactly as they say -- and if it doesn't work, find an applications engineer to yell at!
Tim