I used to think heads were generally lighter than combos .... that is until I bought an AC30 head !!!!
People say that combos are moe portable, but I disagree. I'd rather lug a load split into two pieces (ie. head & cab) than the same load as one piece (combo). But then, I'm 41. Some of you young guns might have slightly more testosterone than me. I gotta be careful with my old joints !