I would be inclined to choose a single type* for your training and perhaps try the other after you finish your PPL. Of the two, my preference would be for the PA28, mainly because you have to manage the fuel system, which is something you will need to do in most types which you will ultimately fly. The C152 (and Yak52 incidentally) have two ways to manage the fuel - on and off. Keeps it simple but if that's all you're used to, it could potentially be something you will overlook in other types. The C172 allows you to select tanks individually but is generally left on "Both" most of the time.
* The PA28 is not cleared for intentional spinning (can't remember about the C172) so if you decide you want to do the full spin training during your PPL course (not a requirement but something I would recommend you experience), you will need to do that in an approved type such as a Chipmunk or a C152.