When it comes to welders, you get what u pay for. I have a Millermatic 250X with digital meters. I can tell you that this thing is amazing.
First off, spend the extra dough and get something bigger than u think you'll ever need. DO NOT BUY A HARBOR FRIEGHT BRAND POS!
It's always good to know that you can weld some thick stuff if you ever have to.
I'd stick with Miller. They are easy to get parts for and all the pros use em.
Jay