Well... the polish plate rack will hold your attention the longest.
All the clubs around here have MGM steel, and at any given match therte will be several setup of different types... so just come out to the local matches and you'll get to try a bunch.
I just picked up my first semi-auto pistol, a CZ75B in 9mm, and if I were to buy a reactive steel target which one holds your attention the longest? An auto popper? The double spinner? A few of the knock-down plates to be spaced around? I see they have the double spinner on sale and that is about the most I would want to spend. Does anyone in the valley ever have a practice/'play day' (non-competition) where you can try out different targets? I joined the Parma range (mainly for rifle shooting) this winter so I really haven't seen what kind of events go on out there.
Baby steps