Cain v Hornseshoppe v Omega v Lowther

Phy driver,like lowther but with bass,warm,inviting sound and no SHOUT.
Oceilla and Auditorium23 make speakers based on the driver.
Alot of guys just buy the driver and put it into an open baffle(a piece of plywood),at least to begin with.About 97db sensitive.
Alot of people with experience of the speakers and drivers you mention find it to be significantly better.My Ocellia speaker is much better than my Avantgarde Duos were to me,in virtually every way except for very large scale and very loud music.

Excellent advise re the PHY. I would also look into Bastani's and the 'new' Altec 604's are supposed to be awesome.

Yes The PHY-HP while expensive are at the top of the list for single driver speakers. Fostex that are in Cain & Cain are great speakers. Madisound is a good place to get drivers. I am building some speakers based on the Fostex F120A an amazing 5" speaker that has a flat feq response from 65hz to 20khs. Once I am done with them I am going to build some speakers based on the PHY drivers. - Have Fun

There are some good websites on Single Drivers like

http://fullrangedriver.com/
http://melhuish.org/audio/index.html
http://www.madisound.com/
http://www.diyaudio.com/

Mark