We are putting together some lights for a mobile studio, to be used in wedding photography, portraits, etc., to accompany a canon rebel XT. We are looking into fluorescent lighting, and feel that, based on reviews, the Westcott Spiderlite TD5 would be strong enough for full body shots. In order to save money, we are looking into a cheaper brand for the fill light, as it would not need be so strong.
So my questions are: Are there any problems associated with combining different brands? Is there a difference in fluorescent bulbs from one brand to another? Can cheaper bulbs replace the system brand?
We are looking at the Paterson Interfit Cool-Light for the fill light. Would this do the trick?