i have had two degus (they like company) and they are friendly and intelligent, the only thing you should consider is they need a far bigger cage than the one they are in at P@H which can be heavy and hard to clean
the other thing that was a big problem to us was when they pee they seem to stick there bums out and spray this means that it would go up the bars of the cage and all over the floor outside the cage and it can be very pungent.
Im not trying to put you off just two things you wont get told at the shop