That tombstone still won't weld as good as the little inverter up to the maximum amps. The 225 basic is AC only which is far less desirable to weld with than the DC output of the HF unit. Plus it is small. IF you get a AC/DC tombstone, you are only getting 125 amps DC and not a lot of performance either. I've had opportunity to use and weld with a lot of them at various times. (several dozen), and they are NOT as reliable as people make them out to be these days. Older ones yes...are not bad at all. But on the newer ones, I've had/seen issues with fans, power switches, and selectors. And some just seem to have the arc die out for no reason. My father owns one as well. I've owned other transformers myself. Given the probable use you are talking about the little HF will be fine. IF you want more serious performance, a little PA 200 or even a 140ST from Everlast isn't much more.