OK folks, now that I have everything in hand it's time to evaluate, as promised...
Result:
Success from both -- ordered beans and received them. No Customs intercepts, no lost mail.
Speed:
Both were excellent, under two weeks from when I sent in my order to when I received beans in hand -- and that is using regular mail both ways. I received my shipment from Gypsy 1-2 days before Doc, but I can't give credit to one over the other for a day or two difference when so much of the timeframe is in the hands of the mail service and Customs.
Communication:
Acceptable from both. Each sent an e-mail or two confirming that the order/payment had been received and shipment processed. Doc's e-mail made reference to "growing", I could have done without that. On the other hand, Gypsy's e-mail was a little too vague.
Packaging / stealth:
I am not going to get into detail about packaging and stealth, for all we know Customs is reading this thread and might learn what to look for. I won't even say if either was in a flat envelope, a padded envelope, a package, a box, or whatever.
However, the shipments were a little different from each other. The problem in evaluating is that I don't know what Customs is looking for, so no way to tell which is "better" or "stealthier." But, they were both nondescript and to my eye would blend it unnoticed in a big pile of mail, and that's the idea.
Accuracy:
Gypsy got my po box number wrong. My po box number has six digits, and I know that's pretty unusual. The first three digits are all the same number and are the same first three digits for many boxes at this post office (for example box 555xxx). Gypsy truncated the first three digits to only two. That is one reason I use a misspelling of my own name, rather than a totally fake name, so that someone at my post office can figure out who the item belongs to. In any event, it got to me successfully.
Gypsy also substituted one item in my order because it is out of stock -- I ordered White Widow x Big Bud feminized and instead got Northern Light x Ice feminized, from the same breeder. The latter is brand new from the breeder, and there have been some pretty wide reports that the WWxBB femmed tends to hermie, so I am speculating that the breeder might be halting stock on WWxBB and came up with NLxIce as a close substitute. NLxIce will be a more indica hybrid than WWxBB but generally an acceptable replacement (Ice is a cousin to WW). This appears to be driven by the breeder not Gypsy.
Bonus points:
Freebies from Gypsy (Mist of Destruction), no freebies from the Doc. Gotta love that. I am particularly looking forward to growing out that Mist because it is almost pure sativa and a cross of two very interesting flavors. I would never want to pay for sativa to try to grow in my limited space, but a free experiment is no biggie. I'll be tieing it way down.
Bottom line:
I see very little reason to say one is "better" than the other. On the points that really matter these two seed banks proved reliable and comparable to me.
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Just want to reiterate that this is very unscientific, one person's experience with one transaction from each company. I cannot vouch for either one and have no vested interest in either. It was just an interesting idea and a little fun diversion for me, hope you enjoyed reading up.