'04 or later.....
Just bought my first HD / XL1200C several months ago. If you really don't think you need a 1200, an 883 is quite a bit less, and will pull you around fine.
I went with the 1200 almost entirely due to resale. In my area, 883's are everywhere for sale,.....good deals for sure.
However, the upgrades / changes to the '04 year models are pretty great.
Unless it's a steal, I'd figure out a way to get an '04 or newer.
Also, for resale, it seems the Customs are more in demand than the R's, but ride what you're comfortable with.
I was hesitant about forward controls on the C, but within 50 miles, it's right at home and entirely natural. (coming from *** standards and sport tours)
Also, don't be affraid to drive a little to get the bike / color / price you want. Dealers are competitive, but I went 50 miles to non home dealer and saved about $350 Honestly, I don't plan to make too many visits to the HD dealer.
If you will always be going to the dealer for maintenance (basic stuff seems insanely easy on these) that may point your decision too.
So, the 1200 C is fun, light, nimble bike, but big enough for some highway and 2 up riding. I would personally buy a new 883 rather than a pre '04 1200 if that's what the budget can do.