I see. Fair enough! :-) I feel much the same way in regard to performance -- stability & performance (in that order) are my two minimum requirements for me using any piece of software on a daily basis. It's often surprising to me just how much half a second can make a difference!

Funny you mention command line ... I find myself preferring it often times purely because of performance :D In oh so many different ways!

I dunno how old of a development system you are talking about, but holy hell is SourceTree completely useless on an old AMD64 (1 core), 1GB RAM, 5200 RPM SATA disk drive ;<o