Hello, im looking for a seat that will offer a little more lumbar support in the lower back than the current stock seat on my 07 XL1200C. Both of these seat seam to have a tall rise at the back, which may help?, Can anyone tell me how tall the rise is and which of these seats might help?, or any other style which I may have missed?

 

I've got the HD Rallyrunner. Looks pretty much the same as the sidekick, but maybe a little more area in the passenger seat. It's worked good for me so far, and it doesn't have the look of the seat being to big/wide for the bike.

 

I've had a Sidekick for a few years. It offers slightly more back support than the stock unit. Not really support, but it keeps you from rolling backwards a little, which helps. The seat area is thinly padded. I don't mind the 2x6 for a seat because I like the looks. The way it's laid out, it sits you down roughly an inch and back about an 1.5 inches from stock. After about an hour and 15 minutes, I gotta take a break. Either my Old Man flat *** gives out or my back needs to stretch. If I'm touring on my Sportster and I have a pack that is also utilized as a backrest, I'll use the stock saddle for the extra padding in the seat. The wider passenger area of the stocker gives better support to the bottom of the pack, too. I love the Sidekick for around town and 200 mile Sunday rides, though.
Couple crappy pics:

 

Let Pera Maverick has awesome lower back support. I got a herniated disk in my lower back the Maverick seamed like it had the most support when I was shopping around.

Here is one on my 02.