I started with the SRT6 and have had it for over 4 years. However, I have had occasion to drive a couple NAs. They are VERY nice as well. In SoCal traffic (AKA freeway parking) the auto is much preferred, but a 6 speed NA is no slouch.

No question in a straight line the SRT6 is a beast even in stock unmodified form. But as posted many times before, when you get to the twisties, the extra power "don't mean a thing." We had a group trip up to Idlewild up in the mountains in SoCal and I discovered real quick how well an NA can keep up.

The auto-stick feature works fine, and I used it at first, but the auto convenience (and this is one fine auto) and power combo had me quickly forget about shifting, though I occasionally run it in manual mode just messing around.

Bottom line, if you are happy with your car but wish it had a little more go, finding a good SRT6 is a good option because under the skin they are practically the same. Take your time and find a good one. Maybe even get one from a forum member who has taken care of theirs but has to part with it because they need a back seat for a family addition. Otherwise, keep driving your sweet 6 speed, permagrin is not exclusive to the SRT6.

Good luck.