Not many posts from me, but.. since this thread started to be more about progressive (metal or rock) bands and not so much about bands that are similar to Seventh Wonder, I'll throw in these suggestions;
Scale the Summit - Carving Desert Canyons
Animals as Leaders - Animals as Leaders
Canvas Solaris - 4-5 albums, favourites are "The Atomized Dream" and "Irradiance"
These three mentioned above are more in the "technical wank"-style, but if you like it odd, you should like these. All these are instrumental, btw.
Thought Chamber - Angular Perceptions. "Supergroup" featuring the singer (or ex-singer??) of the band Enchant. Also check Enchant's early albums like "Blueprint of the World", "Wounded" and "Time Lost".
Something that's very similar to SW (at least I thought the intro to the first song was!) : Status Minor - Dialog.
Andromeda - Chimera (and their first which I can't remember the name of), fellow Swedish prog-metallers.
Sieges Even deserve a mention (early stuff like "Lifecycle", "Steps" and "A Sense of Change") and maybe also their ex-guitarist's band; 7 for 4.
Rush - their 80s albums like "Grace Under Pressure", "Power Windows" and "Hold Your Fire" (to name a few). They're not like SW at all, but Geddy Lee's a great bass-player who's also very visible/audible bass-wise, which is one of the reasons I love SW.
Right'o - I'll shut up, thanks for all the fish and goodbye.
