I have flown both types, not hundreds of hours you understand but none the less.
I love the view DOWN from a 152 and the simplicity of it, and importantly the cost per hour to rent one. They can be a bit cramped and two decent sized chaps and full fuel gets you to the weight limit, but to learn in, fine. There are a few Robin 200’s at the club I fly at and these are very popular, I have never flown one to know, but they have a stick as opposed to a yoke so in some terms they can appear to be more of a sports model (apart from the performance).
However, I do like the solid feel of a PA28, the view is a bit more restricted, but as stated a cracking view when turning and putting something of interest on the ground on the wingtip is just great.
Moggys point about the instructor is really important, as is the costs, cos once you start you can never fly enough!
The other thing I have found is that once you are in an aircraft, particularly when navigating (however you choose to do it) you forget what you are in and just enjoy it.
Basically just get going and enjoy the ride, there really is nothing that comes close to the experience, each time!