ok looking for a mig welder that'll run up to about 5mm (use arc for thick stuff anyways) This is my first tentative steps into the world of mig welding and so far... i think the choice is between the Gys smartmig 162 or the Rtech 180 ... i mean i like the idea of having the extra stick on the rtech (saves my other machine being unpacked everytime i need to use it) but honestly i have no idea about this stuff so was just wondering for about that price where would your more experienced hard earned pennies go?