I eventually added another 2 megs of fast RAM to my Amiga. It was a huge boost! 3 megs of RAM in 1990 felt insane.
Of course, the extra 512KB made our Amiga that much more useful, and eventually we did the solder-jumper change to make it chip, as our A500 is a rev6 with the 1MB ECS Agnus.
I still have this A500; now it also has 8mb fast on cpu slot, an ECS denise and a 68010.
I also had a 30 meg hard drive on my A500 (Supra, which included the RAM expansion.) It was a pretty decent Amiga setup. I taught myself C on that machine (Lattice / SAS C)