Well .. for a 105 gal tk and wanting to keep just about anything .... I'm thinking a couple 250 MH bulbs with some PC or VHO supplimentation or just 3 - 250 watt MH would be a great!

Before tearing down my 65 gal ... I was running 2 - 250 watt 20K XM bulbs ... I loved the color and was getting good results. I got into trouble when I swithced salts and lighting spectrum too quickly (ran 65K Iwasakis prior to the XM's ... big color shift to say the least).

There are sooooooo many different MH options and brands out there. Research (which you appear to be good at) and also seeing other aquarists setups is of utter importance. Make sure you know the different types of bulbs/ballasts availabe as there are big difference from one to the next. Really do you research here b/c there is large margin or error to end up with something you don't like or doesn't work. :o

Remember, There are many ways to a successful lighting setup .. and one lighting setup does not fit all. The most important factor in this whole endeavor of yours will be water quality. I've seen those with the best of everything fail miserably. It's the day to day care that separates the successful aquarist from the frustrated one.

Hope this helps and good luck!