Clarifications of Manila, Rhodium, Sense 2.1, 2.5...

[epiphany9x]

Hey, I used to be pretty up to date with ROMS but after MightyROM 4 final, I dropped out of the game. When I left, Rhodium was all the rage and was HTC's next generation of Manila.

Rhodium 2.1, it was called. So now I see there's no more Rhodium roms at all, and instead they have been replaced by Sense 2.1 and 2.5.

So can someone tell me real quick what the relation between Rhodium and Sense is, and what the difference between Sense 2.1 and 2.5 is?

Thanks a lot