In my general experience, pre '72 (pre Garcia) era L461 Vixens as a class seem to be the most desirable. However, rarity, caliber, and certain specific models across the various years may be exceptions to the general rule. The first models introduced without the recoil lug machined into the action were the S491 (short), M591 (medium), and L691 (long) actions introduced in...1991.