I'm strictly an in-line kind of shooter. I don't do it for fun - I do it only because that is the legal way to spend more time in the field. If you want to do it for fun (because you kind of like the idea of seeing clouds of smoke, etc.) then by all means get yourself a sidelock and have a ball.
On the other hand, if you are like me and are only looking for a means to extend your regular deer seaons then go for the most modern inline you can afford.