I've never ridden Mavics but they seem to be pretty polarizing...people either love 'em or hate 'em.

But, from what I can see online on the XR-1's you've got, I don't think a set of Mavics (at least the models they offer in the sub-$1k range) really gets you much in the way of weight savings? And if you want a faster wheel you are probably either talking lighter weight, or more aero. If you're drafting on your group rides, and if you're doing hilly rides, then the rotational weight is probably more a factor than the aero profile.

A couple options (assuming you want to stick with clinchers for ease of fixing flats):

- Rolf Prima Elan - these retail right at about $1k. They come in at about 1345 g which is fairly light. Haven't ridden them myself, but I've heard a lot of people say a lot of good things about Rolfs.

- American Classic Sprint 350 - a little heavier, about 1410 g, but more affordable at around $750. My hubby has these and loves them.

You could also look into some more expensive and even lighter wheelsets and see if you can find a previous year model on clearance in a shop or online...eBay often has good deals (but of course check seller reputation, etc to stay safe).