Cool Lights bulbs are excellent for video work. I was hesitant about the slightly lower CRI (>87) than the big guys out there (Kino) but after many shoots with them (shooting on SD and HD), I have the utmost confidence in them. They do the job really well. If they're the right price for you, get 'em.
Thanks David. I actually don't know anyone thats complained about our bulbs being substandard.
You know, one thing I've never understood is this insistence by Kino Flo on selling 2900K for the tungsten color temperature. Thats very warm. I know I must not be the only one that doesn't get that. Its one thing to have a difference of 300K in the daylight range--you hardly see that because of Mired Shift (which is a whole other story in itself!) but you really do see the difference in 300K between 2900K and 3200K. A world of difference in the lower color temperatures.
Personally, I feel the Osram bulbs which come in the 3000K range are definitely warmer than our bulbs which come in right at 3200K.
On the issue of CRI, as I've said many times, we didn't go for 87ish CRI because we were "cheaping out." We did it because one thing you learn when you are engineering and manufacturing tubes is that a higher CRI equates to a lower lumen output so a balance has to be struck in there. The reason this is the case is because the green spike is the culprit that messes up CRI more than anything. The green spike is also the reason these discharge bulbs (flo and metal halide as well) have their "kick" of being more energy efficient to the tune of 4 times or so. The more you take that completely out, the more they lose that kick or advantage.
Of course, some take care of that by overdriving the bulbs. Commercial fixtures actually under-drive bulbs a bit to keep their life long. Cool Lights specifies its ballasts to drive the bulb at its theoretical real 55w point which again I think is a good balance.
One other bonus with our bulbs is they come with free padded 2, 4 or 6 bulb carrying cases! I'm not aware of anyone else that does that.