Never grown DB, never got to pick a NAR when I grew it, but GA grows compact and bears early for me pretty consistenly.
http://www.tomatoville.com/album.php...&pictureid=336
"Set early an stopped" happened across the board to our slicer tomato plants this year. I did plant no till, with a just spoon of fertilizer, hand watered a bit and hoped for rain. I think they just ran out of gas. Poured on a bunch of soluble ferts and set the soakers to run a little every day at Noon and now they takeoff like crazy. If the hot hot heat holds off we may still get some yield after all. 8 to 12 fruit per vine I could call a good season
'Course I do set out 50 plants