The BMR Philharmonitors are worth a look, if you like 'air' and an open treble without brightness a RAAL ribbon is hard to beat, and they dig down to 32hz so you get solid bass performance in a standmount/bookshelf form factor. They're typically rear-ported, but if you go for the Salk custom cabinet option they'll build them with a front port if you request it.
http://philharmonicaudio.com/BMR%20Philharmonitor.html
http://philharmonicaudio.com/BMR%20Philharmonitor.html