I got a 47" 1610 ballscrew from Chai (linearmotionbearings2008), it works ok but I had to straighten it because it was bent and whipping. A couple of wood v-blocks and some time later I had it straightened quite a bit. I think it still whips a little but not too much and mostly when the nut is at the ends of the travel. It has never stalled, so I guess it's ok. I get 350 IPM rapids easily with nice torque (I could actually get 450+ IPM with lower torque, but I wasn't confident running my machine with such a high pulse rate, considering I'm using 1/16 microstepping). I'm using 400 oz-in steppers with Probostep unipolar drivers at about 42V, 2.5A each. If you can get a Gecko G540 and a 48V power supply beefy enough to feed the steppers at Bipolar parallel (higher current, great torque and speed) it will be even better than mine. Pushing a 16mm screw that hard might be too much and progressively bend it or damage it, I guess (not an expert, just an assumption). I never cut faster than 250 IPM anyway as I don't need to (I usually cut on the 100-200 range).
I had space problems too (my machine was designed with other screws in mind and I decided to upgrade), so 16mm was my only option; if I had to get that length again for a new machine I'd go with 20mm or even 25mm. I don't see a "2010" screw, maybe that size is limited to a 5mm lead? (there is a 2510, though).
I needed to add some shims to my bearing blocks to preload them (there was some play in them), after that they worked fine.
I bought one nut per screw and I can't feel any backlash on them, so I won't use double nut anytime soon. Remember to use lithium grease on the nut and blocks, it smooths things a lot.
Chai's custom end-machining of the screws (by my specifications) was amazingly nice and accurate, good stuff.
These ballscrews are the best upgrade I've done to my machine along with the SuperPID and linear rails, the speed increase is great for long tasks like 3D engravings.