I have the original RunCore 64GB card, it's been three years now. It works fine, but like many of these older-design SSDs without TRIM, it slows down over time. The link you posted has a picture that does not look like the one I have, but it appears to be a newer model.
I use Kingston ValueRAM. And what I use the Mini for nowadays - not much of anything, to be honest. I had Windows 7 and Mac OS loaded for a while, but now that I inherited a MacBook from my brother I don't need the Mini for Mac OS. Currently it has Windows 8 loaded, but that was just to see if I could. The Mini sits on the shelf. I have an iPad 2 which has effectively replaced the Mini 9 for me.
If you want software that takes up less space, look at Linux.