Holy damn @ how good Pixeljunk Eden is on PC. I played it a lot on PS3 even though I always found controls a bit frustrating, but with a mouse it's even more awesome, it's like it was born to be played like this. Also they didn't just port the game but tweaked some stuff (plants already bloomed stay bloomed until you find all the seeds in the garden, so you don't have to play all over again the same stages like on PS3; you're instantly take to every new garden you unlock, another nice feature; not sure there are more, the game gradually unlock features and I'm not sure the PS3 version did).
I really suggest EVERYONE to grab it asap but I also wanted to address PS3 owners and fan of the original directly: if you're unsure whether to double dip, by all means do. The conversion is really worth the (ridiculous) price.