I have owned and/or shot the Shield, Nano, CM9 and the XDs (in 45) so I can only comment on the shield out of your group. For me it was good but I would rank it third behind the XDs and the CM9 and second behind the CM9 if size is the bigger factor.
My EDC now is the XDs 45 but I keep my CM9 around for when I want something even a little smaller. The Shield's trigger was just a bit gritty for my taste. I loved the CM9 until I shot the XDs and now I think its trigger is the best of all.
My EDC now is the XDs 45 but I keep my CM9 around for when I want something even a little smaller. The Shield's trigger was just a bit gritty for my taste. I loved the CM9 until I shot the XDs and now I think its trigger is the best of all.