Although the latest Wolf models are supposed to have improved from the atrocious things they were, I would still not buy one.
Let us know how much you can spend on a machine and some advice will follow, not forgetting the rule buy once and buy right, better to spend a few extra £'s if you can then end up having to start looking for another machine when your first one proves to be hard work to use.
Power supply 13 amps it's mainly.car parts exhaust and odd body work not going to be used alot but nice to know it's there then shelling out for someone else to do a 10 mins job
Assuming you're looking for an invertor MIG:
Even though I plumped for a R-Tech (and I'm not disappointed by it) I'd say seriously consider the CWS Bestmig 160, it was the on-site warranty and the 180A over the 160A that tilted it for me. If I was buying again though, the CWS would get my money.
If you're not after an inverter machine take a look at the Bluemig 150t from The Welders Warehouse. Just got one and it's a brilliant welder with a nice steady wire feed.