I've decided to take only the 'big' projects Swanö has done, and not the million small EP-bands he's been in over the years, or the one off albums (Katatonia's Tonight Decision, Star One's Space Metal, etc, though I've put in Dan Swanö's self-titled)
It's almost impossible to choose, but through deducting that Diabolical Masquerade is more of a Blakkheim project, Godsend and Infestdead being only good, Nightingale, Pan.thy.monium and Ribspreader being only superbly great, left me with Edge of Sanity or Bloodbath...and as Moontower was like an extention of Edge of Sanity...I went with them. Any of them could have won though, they're all great.
Haven't heard Moontower yet, but Pan.Thy.Monium (and the even crazier Tintin-infused Karaboudjan) will probably get my vote anyway. Dawn Of Dreams and Khaooos & Kon-Fus-Ion blow 95% of the world's music out of the water.
Edge of Sanity, it is an extremely underrated act, coming out with classics like Purgatory Afterglow and Crimson. I like Bloodbath, good ole' traditional death metal, but the more progressive band always wins for me.
...And so death to the falsity of thy former rulers. Thy kingdom of "heaven" burns in a field of fire, and Dentura is the one true God thou must yield thy hearts and souls to in absolute submission. It is his ultimate decree and will unto thee..