If you are on a budget, I can understand buying cheaper tools. You really do get what you pay for. With cheaper tools, you run the risk of damaging screws, bolts, etc. If you go cheap, you will definitely be replacing them at some point.

If at all possible, try and buy some rc tools specific to The R/C industry, as they are designed to work within our hobby. You don't have to go crazy and spend a ton, just pick up the most important items as you are able to afford them. First would be a good set of screwdrivers and allen wrenches.

I use Dynamite brand stuff (which is not expensive nor high end). They work well and I take care of my tools.