John
As an LT rider this will be one difficult decision. I should have bought an RS in retrospect when I got the LT in Nov 2000, but now, 92,000 miles later, I am hard-pressed to say where the LT has failed me. I kinda feel that I wouldn't have a license now (thank god for cruise control) and that I wouldn't have seen as much of Canada and the US as I have where my only missing states are a few in the SW.
I have recently done the BRP three times and I fail to see how that could be done faster without seriously risking my license so a faster bike wouldn't help there. The conclusion I've come to is that the trade-off in a more intense, "personal", close-to-the-action bike ride (especially in tight corners) has been reasonably traded for the touring satisfaction and the sweeper action that the LT provides. So, while I have regrets, I can only have one bike.
Now, would I actually get rid of the LT for the new GT. Unless its really cold or raining, I always ride with the Euro screen all the way down, including the inerstates - its the pathetic way I have of making the LT less, well "LT-ish". Looking at the current GT and thinking about probable improvements, I think its the bike for me. But, hell, the LT's just paid off and I do have to cross the country a couple of times yet to do the canyon country and hit the Pashnit Top 10. Maybe a GT in 07. But then, maybe a hotted up GS with street tires would be just what the doctor orders.