i love mine to pieces. the design has some small issues with it but the pro's ccompletely rape the cons and thus make it worthwhile. for one, the inner barrel is a little loose in the outer which fucks up some shots, but is easily remedied with a little teflon tape. the hopup twists in the reciever which caused me to have to fire whole mags swerving a little to the left or right which was REALLY frustrating, but again helped with some teflon loving.
i definitely won't call it easy to take apart. it's definitely one of the most difficult aeg's to disassemble, but as with most things it becomes a breeze with practise.
i still get occasional feeding issues but the accuracy is astounding, and this is coming from someone who played the last two years as a b/a sniper. for practicality i'd take it over a bolt action anyday, gameplay wise i sometimes pine for my old L96, it was definitely more challenging
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another gripe about the m14 is the relatively annoying factor of getting short 7.62 pouches. oh, and real steel wood stocks, with heavy mods of course, are compatible.
in short it rules but it costs lots of money, has some small issues and is a bitch to take apart, definitely do it with supervision or have a gunsmith take it apart.
one thing i REALLY love about it is that it's so universal in terms of kit. when i'm done my wood kit, i'll have one setup with a VN handguard to go with my vietnam webbing and another with a ris, harris bipod and m1 scope for my modern countersniper/sniper setup. till then, i do a mishmash of all eras and countries but it still doesnt look out of place:
http://www.darkaperture.com/gallery/061706/aat?full=1