A couple comments:
Back to the original question. Are you trying to put some color on the walls while the normal lights off or on? That makes a HUGE difference. Somewhere around here you'll find pictures of a wedding in a tent with
LED lights (I think it's one of Len's jobs). If those
LED's are the only light source and you are going for a somewhat dim, soft look then you might be able to do something with a bunch of low end
LED lights. If you are trying to add color to the walls with the rest of the lights on, forget it. You need a higher quality more expensive product. The cheap
LED fixtures just don't have the
power to compete with a big
Metal Halide fixture, they will be faint and washed away by the normal lights.
Personally I would have to go with a bunch of
incandescent PAR 64's. As was said $80 each and they are bullet proof. Can you have some pipes mounted up high in the corners of the gym? If you can those cheap
par cans can blast color all over the place from the corners of the room.
A question was asked about what kind of
LED's are
in one of the Chinese made
LED lights. This is a really tricky area. They don't use the high end Luxeon K2
LED's we love in our flash lights. They produce their own LEDs, with wildly different levels of
intensity. It's incredibly inaccurate to look at a
fixture and say this Chinese
fixture has 3mm
LED's but that one has 5mm LEDs so it will be brighter. There's just too much variation in these products to get any sort of good data on them right now. You've got to see it yourself or talk to a dealer you trust.
A demo is the way to go. See if you can rent one to see how it looks in the Gym.