I'm on the auto delivery as well and just got my first shipment. Waiting for the little bugs to start crawling as I type this
When I first started ordering I went strictly by who was cheapest. I don't think it makes a difference really. I've been very happy with Spalding Labs.
They send me an email whenever they ship so I know when to start hitting the mailbox early. In the hot summer I hate to leave them in the box too long
I also put up fly traps around the property but I use far fewer traps than I used to. A few traps last all summer rather then before the predators I had to replace them every week or so. I use the nasty smelly liquid traps so that's a good thing :lol