First, congrats on your new ticket!
The biggest advantage I could see to the higher-power radio is if you plan to talk a lot (i.e. have a high TX duty cycle). Then you could get the 75-watt radio and run it at 50-watts all day long without risking overheating (because the 75-watt radio is mostly one big heat sink).
But I usually run my mobile at 5 or 25w, instead of its max of 50, so even a radio rated at 50w (and run at 1/2 power) is sufficient for most uses.
Thank you. Yeah, that's the one thing I think is dumb about the FT-2900R. Max is 75w but the next step down isn't 50w but 25w, 20w, 5w. I don't know, I'm still up in the air about it. For only $20 more there are a few more features and I do like the fact that its a huge heat sink and the display is a little nicer. Arghhhh.
Thanks for the replies everyone. I will post again either in reply to comments or when I finally figure out what the heck I'm gunna get. Lol.