Yup - I use v3alpha on both of mine and the very few reboots I get are all from when I try and do too many things at once (adding new tracks to playlist then fast forwarding or changing visuals while cacheing is underway etc) so I can easily avoid them.
The only downside is v3 needs extra RAM to smoothly run emphatic and as I have not got around to getting that last wire soldered from the ARM to the RAS select, I can't use emphatic at the moment... soon (in Cambridge if anyone fancies taking a few minutes out to help...there will be beers or whisky as payment:-)
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Rory
MkIIa, blue lit buttons, memory upgrade, 1Tb in Subaru Forester STi
MkII, 240Gb in Mark Lord dock
MkII, 80Gb SSD in dock