I've read the thread and listened to a good deal of good stuff, thanks everyone for sharing.
Here's five prog rock band I discovered lately. I'll let you judge the quality of their recording (the japanese ones probably are).
Iamthemorning - Russian, fell in love with their sound at first listening. All of their album have kind of the same sound, you like one, you'll probably like the others.
Willowglass - British solo/multi-instrumentalist, however he did play with other artists. His three albums are different but always with old references (Camel, Yes, Genesis...)
Dancer - old British band, made one album. Can't get enough of the first long track.
Ashada - Japanese, their only album. First two tracks I find amazing, the others are less interesting.
Zabadak - Japanese also. I think they are more widely known, but never heard of them before two months ago. Same deal though, first tracks are the best.
I'll probably be back with other discovery as I've heard a lot of good band since the beginning of the year.