After that post, I've got to add my voice to those saying wait to see where you are, before committing to a big purchase. Seems like you've got itchy feet and, if that's right, you may end up making a rash (and wrong!) decision. As above, the car you have is not half bad, so surely making do for a while, until you know exactly what you need/want/can afford wouldn't be too difficult.
Hate to be boring, but in your situation I think boring is best.