
I think that personally depends on you as well as the puppy...
Me personally I prefer males over females, no dealing with heats and I find them alot more clingy... Thats just what I have found with my 5 and 4 are boston terriers (3-males, 2 -females), they both seem willing to please... Depends how you raise them and the temperment of puppy you get... All my bostons are more laid back except one male (Junior) which is very hyper and always on the go. Before I get a puppy I always do the puppy tests then I chose that way....