Im late to the party on LEDs, I know about LEDs.
With LEDs you tend yo get what you pay for as when LEDs are made they are graded differently. So upfront they'll cost more than fluros but they are meant to last upwards something like 10 years rather than a year or so for fluro's.
If you want to do it budget style (ie cheap at approx $30) look for car/boat floodlights using a LED brand like Cree, using 3w leds to make up the unit, it won't be as fancy and it won't have the best spectrum (as that will be mostly blue/red giving an obvious pink light) but it'll do to test the waters before investing in something with bigger upfront costs.
