You can also try KaiDomain which offers free S/H as well. The brightest LED right now is the Cree Q5 at DealExtreme but it's $10/ea and from my understanding from checking message sites it gets 273lm at 1A.

While the Seoul SSC P4 is older it's only a few months old. I mean LED's are advancing at a rapid rate right now. I would not be surprised if in 3-6 months time another company will come out with another LED htat's a few lm's more then the previous ones. HIDs days are very numbered right now with the rapid advancements of LEd's in the past few years. You can already see HID's dropping in price to try to keep people buying them. Right now HID's still are king from all I've read and from those that have both HID's and highpower LED systems. You get the most light with HID's right now but the bulbs are very flakey from all accounts I've heard and there is no guarntee that you won't fall while riding. If the HID takes a hit you have a very high chance the bulb is going be dead where as LED's can take the hit and keep going. Also HID's do not like being turned on/off often where as LED's don't mind being turned on/off and can also be dimmed. Both have thier advantages pending your use. I'm leaning on LED's for the dimming and as said if I take a hit I know the LED's won't be damaged.

You get 240lm at 1A with the SSC P4's which is ~a 20W halogen give or take. Having 2 x SSC P4's if you've never used highpower LED's or been exposed to high power LED light before is BRIGHT. Nothing wrong with the SSC P4 U-bins. It's cheaper as well. It's almost like getting two LED's for the price of one Cree Q5 right now. I paid $7.18 for the U-bins back then. Now they're more then $2 off. If I was you I'd go with the U-bins and save money.