I'm starting to play around with studio lighting and want to get a good strong monolight with a beauty dish to start off with. I have a cheapo 100w monolight with a stand and umbrella, but the thing is just too darn weak. I have an SB-700 that works pretty well with the umbrella, but I want something wall powered as well as a modeling lamp. I could also then free up the SB-700 for a fill or background light. What are some good 400-500w monolights? Right now I'm debating between the Elinchrom D-LITE4 IT 400Ws and Elinchrom Style BX 500 Ri. Any other good candidates that compete with either in roughly the same price range (3-600)? How much of a difference is there between these two units besides the 100w? Will I really miss the 100w extra? I could almost get two D-LITE4's for the price of one BX500, but I also know my personality and I might prefer to get one BX500 now and add another BX500 later when the money shores up. Someone mentioned in the review of the D-LITE4 that the fan is noisy, but how would the BX500's fan compare? Is fan noise something I should really be concerned about? Thanks for any info!