Out of the rifles you mentioned I'd go with the lightening XL,, provided it's one that's made in England. Word was that they shifted their production facility to Spain... although I'm not aware if that's been verified or not. At any rate, if it's an English made XL I'd go with that for sure over the 48, especially since you'll be doing mostly target. I own a .20 cal 48 and I absolutely love it but I bought it and use if for hunting only, I don't really consider it a target rifle. I don't own an XL but I've shot them plenty of times and every one I ever shot have been really sweeeet rifles. One of the best "out of the box" shooters I've ever shot. Just my opinion,,, others may differ of course.
Jeff