Check out the 48" SunDial T5HO 4x54watt system. The Sundial fixtures have integrated timers and individually contoured reflectors (not exactly individual, but they're contoured around each bulb) and it's only $289.95 at the sites I've found it. I have the 30" fixture on my 20L and it's great. The only other inexpensive T5 system I've seen is the Nova Extreme, but they don't have individual or individually contoured reflectors in that. The Pro version does, but it costs $349.95 for the 48" fixture.