The PA38 is a bit faster, maybe. I think it does better in a crosswind, as well, so you can really go out with an instructor when it is blowing hard, and learn good technique. Larger, which is nice you don't have to overlap arms just to sit in there with an instructor. Better visibility both because of the layout of the glass, and because a low wing design. You can see better in a low wing, unless you really care what is right below the wing (and since you usually will not be flying sideways, I'd say you don't need to know what is there at that second, just look ahead). The transition to another plane will be quite easy as well. I believe the way a PA38 stalls is great for training. Slow flight can be fun as well. Fly one on heading, and altitude, and you'll have no problem with a quick transition to instrument flight, since you will be force to be on top of your flying.
If you like a high wing, with less space, go for the 150/152. If not, go for anything else
Also, ask the instructor what plane they prefer to teach in. And why.