Can't say I like much about T3. It's hard to take the T-X seriously when the only thing it can say within the first minutes are "I like your car", "I like your gun". Then it grows it's boobs and has an orgasmic reaction to Connor's blood. Really? I hate how it's a retread of T2 yet states that T2 isn't really important and didn't matter because JD is inevitable, I hate the attempts at humor. The most talked about character in that movie is Mike Kripke. Apparently he had a basement.
Salvation has it's problems but at least it's fun. Bale is my favorite actor and with Terminator being my favorite franchise, that was a match made in heaven. I'd love to see him return in T5 but due to his experience on Salvation, I doubt he will. Worthington was fine as Marcus but there was no reason for the character to exist other than the writers of T3 hating John Connor. Connor should have been the only lead, I don't know how Marcus survived all those re-writes. His origin really doesn't make any sense. It might have if they hadn't dropped the Project Angel plot but that stuff was so bad anyway.