Crescent 148 Piece Professional Tool Kit | Esidirect
I use tools all day everyday and as a spare take anywhere kit I can pick it up and take it in any of my vehicles at any time. I got one of the above kits from AgQuip a about 10 years ago. It has enough to get you started and what you find you don't have just go and add to it. I have looked at most tools cheap and expensive and these are exceptional quality considering price. It also slides under the seat nicely and the plastic case is solid.
Get what you can afford if you think you will use it,
good tools don't make you a good mechanic.