I've been using the Titanium 140 MIG to tackle serious suspension work. Harbor Freight's current sale is a no-brainer.

The POWER MIG 140 MP multi-process welder, a lightweight and portable welder that connects to 120 volt power.

Finding a good welder can be daunting, but you can find some affordable, high-quality models at Harbor Freight. These are the best of the bunch.