I have a 450, two 550s, a 650 and a 1050. You are wrong about the 1050. That machine makes ammo in a heck of a hurry. I have it set up for .45 ACP and will probably never change it. Mostly because caliber changes are EXPENSIVE. But one thing you got right, that machine is a manufacturing plant. It is magnificent! It always comes down to equipment cost versus proposed volume. The 200 round per month shooter need not apply! The second factor is "how much do you like reloading?". Some machines, like the LCT, let you enjoy it a LOT LONGER! In my view, speed is good - let's get this over with... There's no secret about the pricing. To Dillon 550 and 650 prices, you have to add dies ($64) but you already have Lee dies so the 550 costs just what it says it does on the website. Personally, I would ditch the Lee FCD and buy a real Taper Crimp Die (even a Lee) - $25 at Dillon, less everywhere else. Then you can decide whether the spiffy strongmount and bullet tray make sense (they absolutely DO) and whether or not you want an upgraded handle (I haven't bought those). You can order through BrianEnos.com and save all of the shipping. Your order will take an extra day but you save $30-$40. Your choice... I can't say anything about the SDB, I don't have one. I would be mightly concerned about the proprietary dies - it limits the future. In one of their manuals, Dillon recommends 0.020" flare. That's kind of a lot but it works well for lead bullets. Hey, it's a number, at least we have something solid to discuss. Richard Wanna kill these ads? We can help!