Just for reference, I've dealt with only 'often' on BitMit. He started with BitMit escrow service, and later made that unavailable; this however didn't matter, all was handled as before.
I think I've purchased over 25-30 cartons devided over a duration of about 1 year from 'only'.

Although some shipments were slow, they always arrived.
I can only vouch for this guy, he is legit, he ships fast, good price, and delivery rate to Holland was for me 10/10.
I would highly recommend this guy/group, it's I'm out of bitcoins (stopped mining, heheh), but otherwise I would have still ordered from him!