Personally, I got 1 albino,1 hairless, 1 agouti, 1 berkshire, and 1 fawn hooded (all female) as a package deal on craigslist, and went to petsmart to get my male because those rats are generally pretty sweet and a genetic grab bag which I find awesome. I managed to produce some blues which I thought was pretty cool, and ive been eying up a male rex they have right now haha. I dont like the idea of breeding predestined feeders because some people just dont care if they have aggression in their lines. Rats that are aggressive dont make it in pet stores. Their goal is to keep and sell rats that are good with people. My albino female was slightly aggressive, and I think the fathers friendly disposition kind of evened out the single albino female that was produced from the pairing. I decided to hold her back because of how sweet she turned out to be. So pet store gets my vote. Well, more pet rats.