efficient (loud) 'monitor'/bookshelf designs for 5.1

[Puggie]

I'm looking for a nice efficient design for some 5.1 speakers. I'd like them to be about 12" high (so 6.5" and tweet I think) and more quantity than quality (but ideally still sound pretty good). they will be mounted on wall brackets and need to sound ok while being able to get pretty loud (105-110dB at 1m), power is not a worry (yet).

I'm thinking Tony Gee's Phlea design:
http://www.humblehomemadehifi.com/Phlea.html
seems to tick all the boxes, not sure about sourcing the PHLs

maybe Troels Gravesen's Peerless HDS134 + Vifa DX25TG design:
http://www.troelsgravesen.dk//HDS134_DX.htm
not as efficient but should be relatively cheap, can I get 105dB from them without killing them?

or even Zaph's Seas L18 design (but the horrible IMHO alu tweet would have to go ):
http://www.zaphaudio.com/audio-speaker17.html


so what do people think and what gems am I missing? I've liket the Adam monitors I've heard, and designs with the ETON hexacones knocking about?