Recently I had my mind set on a TS-E 24mm 3.5LII, I knew it'd be great for landscapes and also be amazing for some creative portraits. I did all the research I usually do, found everyone agreed it was a beautiful piece of glass, some of the best optics on a canon lens, I started putting money to the side for it....then I had a play with it and I talked myself out of it. My heart told me I really wanted it, but my head so no. Don't get me wrong, it is a beautiful lens, I do love it and I still think I will get it one day, but the reality is that for my work (editorial/weddings/portraits/corporate events/travel) I wouldn't use it so often to justify the price. Instead, I need another wide aperture lens with AF, say a 35mm f1.4L, Sigma 85mm f1.4, or a canon 135mm f2L, all lenses I can use in many more situations. Cheaper as well which helps.
Both head and heart for me, but sometimes you can find a way to get more than you thought. I had been thinking about a TS lens for quite sometime, but also was interested in wider primes. I ended up getting both in one fell swoop for about $700.
Ed Mika (Ontarian on CR Forum) developed an adapter for the Canon FD 35mm f/2.8 TS lens. I learned about him through an article here on Canon Rumors.
His adapter doesn't have any optics, so you're not slowing down the lens. You remove the FD mount and attach the new mount which has a dandelion chip for autofocus confirmation and EXIF data. The lens retains all its rotational functionality. Plus, the older TS lenses are of a much better build than the TS-E lenses, more compact and all metal. Its an MF lens, so the only thing you really sacrifice is AF. It's a nice 35mm prime. And it's a tilt-shift!
I see you're shooting on a 5D Mark II -- The adapted FD 35mm TS has no mirror interference on FF bodies unlike the Ed Mika adapted FL 55mm f/1.2 which is essentially an EF-S lens.
I love mine so far. I'll probably end up using it more as a prime than for the tilt or shift but only time will tell. Hope this is helpful.
More info on CR Forum by going here:http://www.canonrumors.com/forum/index.php?topic=2337.0
and that's where you'll find the link to the adapter sales.