I've got a harris and a victor I run for work but personally I have an old meco that I love (picked up both regulators, two torch body's and a rosebud setup and a cutting setup for $60 from an auction with two hoses). Gotta order in tips but it's nice. Can't go wrong with any name brand.
If you buy second hand and you're worried about it any shop can send out the regs and torches to be rebuilt. I recently had a victor clone rebuilt ($57) and a acetylene regulator rebuilt ($45, my ******* coworker knocked it over. Grr) and you can't tell a diffrence between the rebuilt units and new ones.
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