Another vote for the Braun Syncro models. The hairs on my neck come out almost parallel with the skin surface, and they're a real pain to cut. Yes, I frequently get ingrown hairs on my neck. Ouch! The Braun does a really good job of getting them though.
I have a model prior to the new automatic cleaning jobbies. The foil and cutter block can be a bit expensive, but nothing compared to the price of disposable blades over the same amount of time. I would venture to say they tend to last about two years as long as you take care and keep it clean.
The key to any electric razor (IMHO) is this: Keep it clean so it stays sharp. My advice: Take the foil off of the razor after each use and knock out the shaven whiskers. Every couple of weeks or so, take the cutter off and give the razor a decent cleaning with the little cleaning brush that is included. Doesn't take very long at all. Of course, this is all null and void with the new auto cleaning models, as they do this job for you (at the expense of have to buy cleaning refills every so often).
To give you an idea of how well Braun's razors are made, I have one that is probably about 6-7 years old by my best guess. It has NiMh batteries in it (they were pretty new at the time). My dad also has one that is about 6 months newer, and is a model one step up from mine. Both of our razors are only recently just starting to get to where the batteries won't hold a charge real well anymore. The razor still works really well, and can be run from the AC plug if necessary. I just recently bought some 2100 MaH capacity tabbed AA cells from Kevin at Batterystation to replace the failing batteries. These will be a 3x increase in capacity from the stock batts., and even those held enough charge to use the razor for about 4 days on average between charges. I have no doubt that the razor will outlast even these new batteries.
I've been able to find replacement foil/cutter packages (both included in one package) at most Wally Worlds. They tend to be almost half as much $$$ there as I've seen them elsewhere.
PS - The good news is that Costco is now carrying the newest Braun BOTH online AND in stores:
Braun Activator Foil Shaver