Hi, I'm in the UK and would like to start keeping garter snakes. i'd just like to know which species i should go for? do they vary a lot in temperament, size and requirements?

garters arent very popular over here but I've seen eastern and red sided in local pet shops today, i've seen checkered in the past and someone on RFUK has bred some san franciscos which are really pretty. If there are others that are recommended i could try to find them, I like different species rather than morphs.