Yugo brakes are not really a good comparison.
I think the best way to put it, is to have brakes properly sized for the vehicle. Too little and you won't stop. Too big and you are just pissing away money. While I agree that SS lines are a great upgrade, I think the best, easiest, and cheapest upgrade is to run some high quality brake fluid. Start there and do a complete flush and you will notice a difference in your braking.
I'm running a +1 kit, with SS lines, and Motul 5.1 fluid and I'm pretty happy. I spent considerably less than a big brake kit. *MY* only issue right now is I went with full ceramic pads. I don't get the bite that I would with different material, and I'm considering switching to Hawk pads.