The upcoming Jeep Grand Cherokee will be an ALL NEW vehicle and Chyrsler is pulling out all of the stops to make it a hit. This is in no small part, an attempt to prove to the world that Chrysler and Jeep and make a world class vehicle.
Sounds like you have your mind made up to get one. Good luck, hope that works out for you. I actually really like the styling of the 2011 Grand Cherokee. I think it looks much better than the 5th gen 4Runner, which is very slowly starting to grow on me. I liked the Grand Cherokee the first time I saw it at the NY International Auto Show.
Still though, you can't deny the track record for both of these vehicles/companies. The 4Runner has been waaaaaaaaaay ahead of the Grand Cherokee in terms of quality and reliability for more than 10 years now.
What I find ironic is that you seem so angry about the sulfur smell coming from your 4Runner that you want to get rid of it instead of taking steps to correct the problem. If one little problem like that turns you against the 4Runner (or Toyota in general), I can't wait to see how you feel about Jeep and their Grand Cherokee after you start to have a bunch of the inevitable little problems that you'll have to deal with as a Jeep owner. Trust me, I'm speaking from experience. I've owned 3 Jeeps and none of them have been anything like my 4Runner.
I hope Jeep does turn around and make this new Grand Cherokee a "world class" vehicle, I really do. But I certainly wouldn't want to own a first-year build as it is more likely to have defects and/or recalls. Just look at the current Grand Cherokee and you'll see that it took them years before they worked the bugs out.
If you do buy one, let us know how it goes. Maybe some day I'll switch back over to Jeep if they can figure out how to build a reliable vehicle.