Anyone have experienc with Hi-freq boxes??

[Hammack_Welding]

Hi guys, I am still working on making my final decision for my new mobile rig. I have pretty much decided to go with the Lincoln 250 or 305, and I am trying to decided what else I might need. I do a fair amount of aluminum repair in the field and was wondering if any of you have any experience with the Hi-freq boxes to add to a portable machine to tig aluminum? I pretty much work on material in the 1/4" or less thickness (mainly patching tanks) I have considered the spoolgun option as well, but I always keep argon, and a tig setup on the truck anyway for repairs that require it, and just thought it would be easier to get one of the Hi-freq units, vs. taking up the extra room with a spoolgun, and controller. Just curious as to your thoughts. ~Jackson