Stable as anything I have played barring a tone-robbing Ibanez edge back in the late 80's... Most of the time with the DGT I do not put the arm in. But when I do, I have no fear... It is smooth and VERY stable... Bear in mind the DGT is designed with .011 gauge strings in mind with a full set of 5 springs in the back. This is considered more stable than lesser gauge strings and less springs. The DGT has nicely rounded jumbo frets which make bending on the .011s feel like .010s, so no fear there. You can also go to .010s if needed without removing any springs and be just about as stable and have bending feel like .009s...
my luthier is Cris Mirabella. really great guy. he will do pretty much anything you want and his prices are really fair. around $4k for the guitar i described. get a gibby, even a studio, and do all the upgrades that i mentioned and it will probably cost you around the same. he is known for his jazz guitars an hollow bodies but he loves doing solid bodies too and he seems so interested in the projects i present to him. Mirabella Guitars just turn down your volume a bit for that first odd sound. take a look at the clients list. big names like erlewine, gibson, prs etc are listed. he does a lot of work for them (sometimes just pickguards and such) but his reproduction stuff is really dead on.
Hey...I'm on the last day of my 2 week vacation today. Yesterday I almost bought a 60 VOS at GC here. I just checked the forum on a whim and see your custom that you sold yesterday, of course, peding payment. If something goes wrong with your deal, please contact me.