I think a lot of all this comes down to trigger preference. Most people have a Glock, XD, or M&P in their collections that get some range time. The Shield has a super trigger which will appeal to those folks that are familiar that setup. I shoot all my revolvers double action only. My PM9, with it's long slow trigger, shoots like a high end revolver with a top quality trigger job. For me it makes the transition from my 340PD to the PM9 a minor one. So now my carry choice is driven down to which of these two I can control my shots better with. In my case the PM9 wins and therefore it is on my belt 90% of the time. Somewhere down the line for $400 I will buy a Shield and if I really don't like it off it will go to a new owner. As a part time RSO and instructor I heard a lot of hype on the Kimber Solo. They came into the range and after a few weeks they could be had by previous owners for a lot less than retail. Waiting makes sense. Something I have a lot of difficulty with when it comes to guns.
"Never pet a burning dog"