Very tough.
I do love both girls and boys, I have 1 of each and I got them when they were 4 and 6 months old.
Honestly, I do not think I would get a puppy again. They sure are cute, but it was a lot of work, and to be honest, now that they are older (3.5 yrs.) this has been the BEST time.
They aren't 'puppy crazy' anymore, they listen VERY well, they are behaved and content.
I think you need to go and see for yourself how the 5 yr girl is, you may suprise yourself and fall instantly IN LOVE with her
