I have used Lubuntu and lets be honest, the LXDE sister of Ubuntu, is not that catchy to look at. So, if you want to have a good replacement of Lubuntu, without compromising on the performance (lower resource usage) or functionality, and at the same time looking really good, here is Peppermint Linux for you.
From Peppermint Linux 3
I downloaded the 32-bit ISO from Peppermint site. The 560 MB