Helios T5's

i have one in the super blue color.

while the color of the bulb is nice, its basically a throw away unit. you cant change bulbs when it dies, you just throw it out.

also, its a weird length (not a standard t5ho bulb length) and the reflector is not very good. i actually think the reflector really doesnt help much its such a poor design.
I had one of these. They're made as disposable units but when you pull the end caps apart, the bulb is just like any other T5. You should be able to slip another bulb in in the same sockets. I decided to go retro though.