the HT802 is def a cree led from tthe picture, is a SIDE button (good for LONG flashlights) and comes with a built in charger unit
and the HS-802 is pretty expensive for a budget R2 flashlight,
HOWEVER
the HS802 is ALOT shorter, ergo the tactical switch and has MUCH BETTER heat sinking qualities for an upgrade (say MC-E 700 lumen+)
it is also built EXTREMELY well and has a tight reflector (ergo good thrower)
HT802 would be difficult to mod due to the charging circuit, but could be done
the HS802 would be a MUCH better choice if you wanted brighter than an R2 in it, but that may be enough for you
the built in charger unit to me is useless. and those batteries that come with the HT802 just plain SUCK
if your willing to spend the money get the HS802. its a GREAT flashlight from what i hear and i wish i could own one
as for batteries, good budget batteries
http://www.dealextreme.com/details.dx/sku.20392
and charger
http://www.dealextreme.com/details.dx/sku.12162
those batteries, quality varies, so be ready to maybe get some crappy ones, but some come out QUITE capable.
i have ordered a bunch of them. if one arrives dead, DX sends you 2 new ones! a big plus in my eyes!
i have that charger and its the best i have, while a bit slow compared to some, its super safe, super smart, and does the trick.
just dont leave it plugged in like ANY chinese charger
if your looking for something with more SPILL and is modable. this is my favorite Bang for the Buck
http://www.dealextreme.com/details.dx/sku.12325
with
http://www.shiningbeam.com/servlet/the-132/3-dsh-Mode-Regulated-Circuit-Board/Detail
thats my brightest flashlight right now
and my favorite. i baby it soo much and i dont have to. hits the floor all the time
the reason for the regulator is because the stock one only drew 1.5 amps on high. that one draw 2.8 and puts out a TON of light. can double as a room torchiere! not a thrower, but with that much light who needs it to throw any farther!