Here are my thoughts, gdv: Your system is, indeed, very modest. You won't get as much of a difference as someone else with a better setup. However, you'll get enough of a taste of what an absolutely 1st rate mastering and 45rpm cutting will do. I'd go for the 45rpm version, for sure. Yes, the Music Matters will have a nicer cover for those titles (AP has improved their cover design and execution since those releases, due to competition from MM), but you ought to hear the best possible version for yourself. The MM 33s are fine, but the 45s, regardless of AP or MM, are better. Try just one. Compared to the BN 75th, you should hear a more relaxed presentation with a richer, more dimensional instrument portrayal. Notice that the cymbals will have more of a shimmer and roundness. At 45rpm, your modest setup will have an easier time navigating the grooves as well. If you can appreciate the difference with your modest setup, it might inspire you to upgrade at some point and then you'll hear even more of a difference. Additionally, once one of the AP or MM reissues actually goes out of print, you'll easily be able to sell it at cost or higher if you decide that it's not worth the difference. If you really love both of these albums, buy both. Again, you'll eventually be able to get back what you paid, or close to it.