I can't speak for what's "better", mostly because my chop saw experience is limited to the year I worked at a sign shop, and I only used the abrasive type. That being said, given the choice I would lean towards the abrasive kind anyway. I don't like the idea of a tooth catching the metal at high speed, even IF you're clamping the metal down like you should.
The opposite result, of course, being the possibility of a high-speed detonation of an abrasive wheel, which is also not good. But PPE is kind of expected around a chop saw, so the trade-off (for me) is pieces of flying cutoff wheel vs pieces of flying metal and equipment.
But I'll wait for experts to chime in who use it more than I did.
1969 CT90- Needs rear tube and possibly rings
1976 GL1000 (Yellow)- Carb Shenanigans.
1984 GL1200 Standard- For Sale! viewtopic.php?f=6&t=69166
1980 KZ1300- Carb balancing when the weather warms up
1972 CB750 Barn Find- Tires and Head BearingsAll advice I give is only valid until an expert corrects me.