I replaced my Glock 21 .45 with an XD-45 Gen 1 several years back. I actually got the service model with the 4" barrel for concealed carry reasons. Glad I got a stainless slide version while they were still available new. I still prefer the XD Gen 1 personally. I just like the looks of it without the "Grip Zone" or huge "XD" across the grip. The Gen 1 is a classic to me. Notice the Glocks still look mostly the same after 40+ years as well (not to mention 1911s). I may pick up one of these Gen1 Tactical models with the longer barrel, just to have in case Springfield ends those too. I feel Springfield would have a larger sized market if they would tone down the marketing stuff and just focus on perfection, and stop with replacing/retiring models all the time. Gun buyers don't like short shelf lives with their guns, and neither do aftermarket parts manufacturers.