I have the Alphatig 200x. Very happy with it. I happen to like the pedal. The torch is good enough. YMMV
FWIW I learned TIG on a water cooled Miller Dynasty setup... all the bells and whistles. Most of the bells and whistles are beyond my needs. The Alphatig works pretty much as well as the Dynasty for my home garage needs. (Though I wouldn't say no to a Dynasty if it came knocking.)
Duty Cycle is where the big difference is. Also using Helium Argon Mix and pre-heat with these smaller machines make them think they are a lot bigger than they are. The Pedal is usable sure but it really does ****... At least they took the current control knob off the pedal and put it on the front of the machine not like they used to be. I can USE the pedal fine, it is just awkward for my ankle, Better stuff is available, why not use it? Even with all the bells and whistles added (Cooler, Better/ Smaller, Torch, Better Leads, etc.) you would still be about 1/3 or so of the Dynasty. Like I say it is a GOOD machine. not the Best by any means but it IS good.
Last evening I welded about 12" of 3/16 Aluminum, 1.5% Lanth, 3/32, 3/32 4043 Filler Material, Scrubbed with an SS Brush, 180 A, No Pulser, I wrap the lead around my forearm for control, always have so... I just do, well after 6" I could feel the lead getting Hot, the Cooling is as much for the LEAD as it is for the Torch... I've had numerous times when I would like to have a 9 or 20 torch...