The only experience I have with the original was shooting a friends, It's what made me want to switch from the XDm line to the M&P line. They just fit so well in the hand, super shootable, low bore axis is really nice. Stock trigger on the original is pretty horrendous but the 2.0 has a decent trigger (only a little far back for my taste). Both are still improved by an Apex kit of course.
I carry very rarely, a Ruger American Pistol 9 Pro at the range, or a S&W M&P 9 Shield other times when bulk is not an asset. My handguns are for plinking and defense, only. I spend most of my time either at home, or in places, like the VA, where carry is not an option. Both firearms have always worked as expected.
99% EDC for me is a Beretta Px4 subcompact 9mm Appendix and a Beretta Pico. 380 BUG in the back wallet pocket. Rarely I also carry a Colt 1903 Pocket Hammerless in .32 acp that has been tricked and hard chromed.
I'm in Florida so most of the time light clothes dictate what's practical to carry... I have a 43 that I like a lot but it's just barely too big to be an EDC for me. 99.9% of the time I pocket carry a 438 in a sticky holster. I did however just order a no-lock 340pd and can't wait to get that little 11oz fire-breather.
I used to carry a Sig 239 9mm but i decided i didnt want my carry piece to be an expensive one. So right now i conceal carry a Star model BKM.....although i am really looking forward to getting a Sig p365.