About those sata's I definetly like the digital... I have a bunch of sata's and love them all... have a NR95 which i use mostly for single stage or solid bases... works great has a 1.4 tip,, which is why i like it with single stage it gives a great look...
also have the NR2000 which is my base coat gun.. has a 1.3 tip... really breaks down the metallics good, has a standard regulator on it, really wish it were digital... but a friend dropped it off and only wanted $75.00 for it.. couldn't pass that one up..lol..
also have the digital RP which is by far the best gun i've ever used to spray clear with... and really have grown to love the digital part of it... don't have the guage hanging of the bottom,, sounds stupid but after you use it for a while and grab one with a regulator, you notice the difference... the balance of the gun feels better to me that way also..
but if you want my opinion, if your gonna buy guns sata's a great choice,, especially the digital's,,, they'll last you a very very long time if you take care of them,,, I've sprayed with my NR 95 for about 5yrs now and still sprays like new,,, sure it will in another 5yrs... so if you buy a good set of guns now they should last you a very very long time.