My take on the AHP, you get a LOT for a Little, the earliest models had limited Pulse function and a heavy thick torch and lead, also a current knob on the pedal and connections similar to the problems I laid out with the Eastwood. They changed the pedal and added freq and pulse options, then they changed the torch and lead, and now I am "Told" they will have a model that includes the NOVA pedal early 2018, I have a 2017 and I am loving it more every time I use it, Granted I was using a 2016 or 2017 at the shop since early 2017, Getting used to the AC Balance was interesting but after reading up on it I found out about the reversal, so you begin on the left side of the dial and turn UP like everything else, instead of starting at 90% and turning BACK, now if you reverse your leads then the AC Bal works as "Normal" I make no bones about the fact that I was unhappy with the included pedal, When I bought my home AHP, I already knew I wanted a cooler, and a 20 torch... so I contacted HTP Jeff Noland and told him my plans and he set me up with the order so when I was ready I could just call it in. which I did, the HTP order and the AHP order all arrived same day, so I hooked it all up and made some test welds just building up a mis machined part that I happened to have that was 60 series aluminum, worked famously, Then a job welding some 2" 5052 Square tube for a shop (my metal supplier) That particular job paid for the welder, then some other work, have a stainless job coming up which will likely pay for the cooler, plus some accessory items. I don't get a kickback for promoting AHP, Wish I did! LOL! Compared to some of the other options this thing is awesome. Even with the COOLER and the PEDAL and TORCH upgrades I am still UNDER the Miller DIVERSION number. I'm very pleased with the machine, granted I had considerable TIG experience before using the machine that is currently at the shop (Work) and was pleased enough with THAT machine that I got one for Home. I'll add a cooler and 20 torch to the work machine as soon as I can. WELL worth it!