I just bought a 2006 XKR Victory Edition. The owners manual was for a 2007 model. So I don't have an Owers manual or a Maintenance/Service Manual. I have been reading this website for information. Before I start collecting Manuals I wanted to ask you guys which service manual was the best one. Someone told me that ALLDATA didn't have very much information about the XKR so a subscription to ALLDATA would be a waste of time and money.

Which Service Manual is the best?

Can't advise on the best, but the cheapest is right here on the forum. Go to the DIY sticky and you can download an owners manual and other fun stuff for free.

The JTIS is also available which will get you some serious mechanical help if you work on your car yourself.

+1

JTIS is the factory manual, and while it technically ends with the 2004 MY it applies to all years of the x100.

Welcome to the wonderful world of Jags. Your question brought to mind the workshop manual on the following link. Has anyone bought this and was it any better than the JTIS?
XK8 XKR Workshop Manual 03 on [Jaguar XK8 XKR X100]

I have some manuals that you can peruse before you buy - here's a link...

https://www.dropbox.com/sh/szicsjmay...VlQhao7ff3MGja

The content is identical to JTIS, I have a preference to use the pdf.