Measuring light output/setup

A PAR meter comes to mind, but what would be the best way to "figure out" what the output etc results in for led's?
The led's I have seem to be working just fine, but being someone who needs to know all the details, it's making me wonder what the actual output is...
Anyone have a par meter, or perhaps another solution for figuring all this out?
I opted for a cheap route to see if they would work, but all I have is the voltage/amps of the units..
Thanks!

 

Are these the same? If not what's the difference? (at work, don't have time to read up hehe)
http://www.apogee-inst.com/bqm_spec.htm
http://www.aquariumspecialty.com/catalog/product_info.php?products_id=3225
Maybe we should get a thread going for a purchase of one?
I mean, I'm willing to pitch in 20-50$ for the benefit of everyone..
Heck if we had even 20 people pitch in 20$ that's 400$...
Even 50$ a piece x 20 people, I'm sure we can find something for 1,000$ /DesktopModules/ActiveForums/themes/_default//emoticons/smile.gif