redawg,
Sent you a pm. I've got a Bushnell Sportview on a G20 on a redfield mount. I love the setup, but in the future will pickup a different reddot. Haven't looked at any others so can't help you there. For close shooting this setup is hard to beat and is tons of fun. This still allows me to see my nightsights under the mount as well.
I've got an extra mount, if you're interested pm or email (jaymassey@hotmail.com).
Take care,
JCM