i've got pretty much what lanny has suggested over my 36" long tank at the moment. I have 14K 250W Metal Halide with 2 39W 36" t5's (well, one t5 atm due to waiting for my bulbs to arrive and being impatient) If you read my take on budget reefing i have a minimal amount sunk into the halides and the t5's (which were replacing 96W power compacts) i have about 90 bucks total into them with ballast, end caps, and 5 bulbs (Current 460nm, 2 ATI blue plus, 1 ATI Aquablue, and 1 Fiji Purple). The 14K halide made everything look real nice, much better than the 10K i had before. With the single 460NM blue bulb everything looks real nice, colours fluoresce a bit more and have some more pop. I may try putting a 10K halide bulb back in after i get the other t5 installed to see how everything responds. The 10K halide with the 2 ATI Blue + may work nice.. We shall see..