I have instructed on the Glock since we got them in 1998. For the price, the Glock beats Sig and HK. As for your supposed research that's "proves" those weapons are more accurate. BS. Prove it. I along with a lot of folks will out shoot and/ or bullseye you with Glocks any day. Having a standardized pistol makes plenty of sense in regards to training. I saw many subpar shooters become decent shooters with a Glock.