Having owned a 66T Peddinghaus mechanical and now a CEC Engineering (modern day MetalMuncher) 35T hydraulic, I'd highly recommend the hydraulic versions!! The Peddinghaus scared me a lot to pull that handle. Not to mention it was *heavy*. I think it went north of 7000 lbs with the base that was added to it. I don't think the hydraulic weighs 2000 lbs.
Clausing now supports the MetalMuncher lineup, what I have is now a MM-40. Even the "small" ironworker is quite capable, it will pop a 1" hole thru a 3/8" A36 plate as fast as you can pull the handle. Remember the classic equation LTS/2000 = punching tons where L = length or perimeter in inches, T = thickness of metal in inches, T = tensile strength of the workpiece in psi.
I really like the press-brake kit which came with it as a factory option, 3/8" x 2" hot rolled flat bar bent 90 degrees in no time at all. Biggest factor was the time to change over from the punch unit to the press brake kit.
Probably budget $400 for a full set of round punches and dies if you didn't get any with it.
Where I work we have a Piranha and I don't like the fact that the punch tooling travels in an arc. Many people have crashed the edge of the punch and die operating it.