I have owned the EAA Elite Match, Glock 20 and Colt Delta Elite in 10mm. IMHO the Colt is by far the best. OTOH, I build custom 1911s for fun and profit.
The Tanfoglio had the best gun before serious customizing of any of them. I did replace the recoil spring, hammer spring, sights and firing pin (with titanium) before I ever fired it. It was the most accurate, best trigger, etc. However, I did numerous upgrades, including have a machine shop custom mill a pair of aluminum 32 LPI grips.
The Glock was a specially equipped model sent direct from the company to me. It had every bell and whistle available at the time. It had typical Glock accuracy, which is to say acceptable but not great. Even after sending it back twice and taking it to several gunsmiths it never did feed reloads. It was 100 percent reliable with factory loads, but never, ever returned to battery even after ordering a custom built sizing die to remove the bulge from the base of the case.
Due to its unreliable nature and mediocre accuracy I traded it off.
The Delta Elite is one of the finest handguns I've ever owned. OTOH, I customize 1911s and although I only did the specific work I wanted it would cost the average person more than $2,000 to duplicate it. It has a 2 lb, 12 oz, trigger pull with no pretravel or overtravel. The frame to slide to bushing to barrel fit has no play whatsoever. It is dead on accurate and 100 percent reliable with everything from my cast plinking loads to full house SD loads.
That said, because of weight and balance and recovery time, I shoot the EAA in IDPA/USPSA/Action pistol.
I carry the Delta Elite as a sidearm a lot.
I sold the Glock. It was too much trouble. It had a Glock trigger. It had Glock accuracy. Those qualities do not cut it for me.
I do admit though, the Glock was the only one of the three that I did not customize myself, but had it all done at the factory. If the Tanfoglio or the Delta had issues they were probably corrected in my initial customization before they were even fired. I never fire an auto until I have at least replaced the recoil spring and mag springs. It is really rare to find an auto that has the right spring setup NIB, IMHO.