as of now, i'm processing my own brass. if i had to send it anywhere, i'd send it to Dick Whiting. (PM me for contact info). $45/k + return shipping, but it's absolutely pristine/perfect when it comes back. cleaned, deprimed, swaged, trimmed, chamferred, deburred, flash holes deburred and primer pockets cleaned (seperately, not just by tumbling). it's literally almost better than new. he'll cull out the rejects too, and send them back to you in a separate bag.
Avoid RVO. they used to be awesome. guy who ran it died a few years ago...his wife tried to keep it going, but it's a crapshoot. its not uncommon to not get your brass back for a couple of years.
i also avoid Shnarch.(sp?) IMO, they overdo the primer pocket reaming, and remove WAY too much material.
as per brass/reloads....i'm up to 5 or 6 loadings on some of my Winchester brass (rather *warm* loads too, was using win brass for my 600yd ammo), 3 or 4 on my Lake City processed brass (also quite warm...77gr sierra matchking going ~ 2800fps). i've had to cull a few here and there do to loose primer pockets, or split necks....but no signs of case head seperation yet.
i do have ~ 800 pieces of Lapua (200 are 1x fired now, 600 are still virgin). cant comment on number of loadings, but there is no finer brass out there for real precision work. cases are all within a couple of grains of each other, ive heard (havent done it) they're usually very consistent if you water weigh them...neck thickness is almost perfect, and primer pockets are PERFECT. every primer feels as though it seats exactly the same...every time. it IS pricey (last batch i bought was ~ $50/100pieces with shipping), but to me, it's worth it. im gunning for 20 rounds inside a 6" circle @ 600 yards. i'll eliminate every possible variable i can get.
plus, unlike new winchester brass. it needs NOTHING. with Winchester, i had to trim every brand new case (necks were horribly uneven). with the Lapua. i open the box, prime them, drop powder, and seat a bullet. that's it.
(so far, my results have been good. averaging 5-6k rounds of match ammo a year right now that i'm blasting through)