Most preferred or most used? Which is it? 
My most preferred is either a .45 ACP 1911 variant or a Glock 23 (call me schizophrenic if you want, but they both work well for me). My most used are a brace of S&W Centennial .38 Special revolvers.
Under ideal circumstances I'd always carry what I prefer. But my circumstances are typically far from ideal.
Sounds to me like you made a good choice with the G-30. Personally, I would not carry any Glock in other than a good holster without using a Saf-T-Blok behind the trigger safety. I've used one for years when I've put a Glock in a fanny pack, briefcase, etc. With practice it adds practically no time in deploying the pistol. It also gives me piece of mind, and if I was sticking a Glock in my waistband with a Clip Draw I'd really want that extra piece of mind.
My most preferred is either a .45 ACP 1911 variant or a Glock 23 (call me schizophrenic if you want, but they both work well for me). My most used are a brace of S&W Centennial .38 Special revolvers.
Under ideal circumstances I'd always carry what I prefer. But my circumstances are typically far from ideal.
Sounds to me like you made a good choice with the G-30. Personally, I would not carry any Glock in other than a good holster without using a Saf-T-Blok behind the trigger safety. I've used one for years when I've put a Glock in a fanny pack, briefcase, etc. With practice it adds practically no time in deploying the pistol. It also gives me piece of mind, and if I was sticking a Glock in my waistband with a Clip Draw I'd really want that extra piece of mind.