I don't perceive that SAs have more trips back to the shop, based on what I read on these boards.
I have 4 SA 1911s and a M1A Socom, and I sold a SA V-12 several years ago that I wish I had back. I also sold a SA 9mm with Novaks 1 or 2 years ago.
I have customized (actually my local 'smith did the work, which all related to getting the 5 - 6 lb. trigger pull down to about 2.5 lb.) a V-16 that is one of the best guns I own. He also had to tighten the barrel fit, which was quite loose out of the box.
I shot it yesterday with my STI Trojan 6" 45 ACP and my LB Ultimate Master (comped) yesterday, and it outshot both of them consistently. It is clearly going nowhere, except to the range in my range bag.
My 9mm with Novaks was a great gun. The only reason I sold it was to get a 9mm with Bomar style sights. The SA 9mm with Bomar - style sights had exensive rust out of the box, but SA replaced it with a clean one. I had the trigger components on it replaced (with a STI long trigger and C & S sear, hammer, etc.) to get the pull down to about 2.5 lb. It is currently in the shop getting the extractor replaced, but it has been a great gun and I have no complaints.
My M1A has been great out of the box.
My SA Trophy Match 40 S & W has been fairly problematic. It is currently in the shop because it chronically fails to feed (i.e. nosedives). It has also had a litany of sight-related problems. Notwithstanding those problems, the detail work on the gun is great, I have had my 'smith get the pull down to about 2.5 lb (as per above mods), and I plan to shoot it a lot when it gets out of the shop.
I plan to keep buying SAs as long as they keep doing such a great job in the R & D and product development areas.
I regard their production guns as base guns for light modification and heavy shooting.