For blackberries, I'd recommend Ecolage.
http://ecolage.safeshopper.com/169/2098.htm?221
Haven't tried those, but I've ordered other things from them and it's a wonderful company.
To get good info on mail order, use Dave Garden's Plant Scout, which can be tricky.
http://davesgarden.com/products/ps/
Enter what you want in the box. You'll get a list. Click on the botanical name in the list to see more. You'll see something about 2 vendors have this plant. Click on that and you'll get a list of the vendors with their ratings in Garden Watchdog.
Big Dipper Farm is another one I've used that sells some of what you're looking for. They were good.
http://www.bigdipperfarm.com/cgi-bin/searchstuff.pl?Botanical=Rubus

Always check mail order nurseries out on Garden Watchdog before ordering. All mid and large size nurseries will be listed except for TyTy and its subsidiaries which, from what I understand, made Dave's pull their page with the threat of a lawsuit. This is an extremely valuable tool. Don't base your entire decision on this, but definitely use it as an important step.

Here is a link that might be useful: Dave's Garden Watchdog

Check out Hidden Springs Nursery. They are in Cookeville, have some neat stuff, and have earned a 100% rating on Garden Watchdog. Ya can't get better than that!

Here is a link that might be useful: Hidden Springs Nursery