Primes vs zooms in studio

I am in the process of developing a studio set-up for 1-2 person shoots. I have my 24-105L which I like in general, and does my wedding work and outdoor work well. ( Although I sometime question it's sharpness at times and contemplate sending it back to canon for calibration as it is still under warrantee).
My question is....do most use primes for their studio work, or do they use their zooms. Sometimes I feel that zooms can lack some pop, that the more you ask a zoom to do, the less it can do well. Do primes give better sharpness, color and "pop" than zooms? I bought a 50 f1.4 and am contemplating the 35 1.4 and definately the 85 1.8.(Can't justify cost of this L)
However, also on my " to get" list is the 16-35L. This covers my wide needs (on 30D) and my 24-105 covers rest. I plan to go 5D next year so I don't want ultra-wides. If primes are worth it, than I will certainly go forward with this. Certainly the prime f-stops will be better.
This week I order my bees, backdrop coming this week, looks like some learning in store for me!! Thanks for your help.

All I can say is that I saw the 24-105 being used by top pros in seminars and the recent photo show in New York City. Their results were nothing short of magazine quality.

Would an 85L give you better results? Perhaps. But you can't go wrong with a zoom either. The 24-70 has been sterling also.

If your studio is large enough to zoom with your feet, a prime may be the way to go. If it's a small space, the zoom may be your only option.

mark

The room I use for studio work is 12' x ~20'. From focal lenght perspective, and for this setting, I find that my EFS-17-55, the 50 f/1.8 work very well. I get the shots I need. I've tried my 80 f/1.8 and have found that, for anything other than a close head shot, this lens is just a touch to long. I even tried the 70-200 and found the short end a touch too long for the way I want to work.

I haven't done enough work with the two primes I have to determine the relative "pop" compared to the zooms. Even so, I would have to take them out-doors to do the comparisons.

Greetings,
I have a studio of a similar size you planning to put up. I'm using the 24-105L, 50 1.4 and 85 1.8 for most of my studio shots. When I'm feeling lazy, I use the zoom throughout the session. It does a very good jod. But, when I have a specific idea of what I'm going to shoot for a take, I'll use primes. They suit my style of shooting more than the zoom. As for IQ, these 3 lenses are up on top. So its a matter of shooting style. Enjoy...

I use 24-70mm most of the time in studio shots. It is much more convenient. Your 50mm may be too long for full body shots in a small studio.

On a 30D, the 35mm and 50mm focal length would fit best.

Some choices you have are the 50 1.4, 50 1.2L(coming soon), 35 2, 35 1.4L. Each of the L's will be super expensive though.
A good lens like the 24-70 or 24-105 would work very well for zooms. And 3rd party you have the Tamron 28-75 and Sigma 24-70.