Faster shipping.
I've only ordered from them once. Order arrived in like three or four days, depending on how one counts these things (late evening order, and does a Sunday during the wait count as a mailing day?).
The "stealth" packaging, I didn't care for. Mr. Obvious must have packaged my order, so the "we remove the breeder packs for your safety" bit had me scratching my head. But I knew who I ordered from, and you either trust a company to send what you order or you don't, so that's neither here nor there. They definitely have an angle for mailing seeds to us that most other 'banks haven't figured out, yet, and it's a good one.
If, in the fullness of time, I find myself considering one of their strains again, I'd have no qualms about ordering.