I really like the S-type. I love the way it looks, not nessecerably better than the LS, just different style. I have looked at them about 4 times at different dealers, new and used, but every time I get inside I do not feel like driving it, probably because it reminds me of an LS. I wouldn't mind buying an S-type R, but the regular ones are not worth of changing the LS to.
About the emblem, I'll think something about it. Now I am thinking of having made a custom center console for my LS, with a different material, because the stock one is way too noisy and it drives me crazy.
I paid $145 for the steering wheel (ebay), it was taken off of a Jag when the car was new and it wasn't used. It is in very nice condition, except the wood has couple of little scratches. The airbag I got from ebay also and paid $182 for it, it is perfect, the leather on it is just like new.
The steering wheel is direct fit, the bottons are a little different (radio controls on the left, cruise on the right), so I put the ones from the LS wheel, they are interchangable. The only thing that I had to modify is the rear plastic part of the Jag's wheel. The hole that it had was a little smaller so I had to enlarge it. The airbag is exactly the same as the LS's airbag, just the cover is different.
So, it costed me $327 and I installed it myself.