I had the standard Hella lights on my old Rav4 (The big round ones, forgot the model). Definitely very bright and nice. I went with PIAA 580s for my 4Runner, and they are definitely brighter, but also much more expensive. If money is an issue, Hella's are very good. If you have money to spend, go with PIAAs. It also depends on what you want to use them for. Driving lights, in most situations, can't be used on regular roads. Chunderboy has smaller PIAAs that are mounted lower due to his brush guard set up, so I think he can use them more frequently than I can, since mine are mounted higher up (plus I have a lift kit). Keep this in consideration too before you purchase.
I went with the fog model (as opposed to driving lights) because the beam pattern, while not quite as far projecting, can be used on normal roads. No way I could use the PIAA 580s if they were driving lights. The Hella's I had before were really too bright to use even in normal driving circumstances, and If I'm going to spend that kind of money, might as well be able to use them.