Definitely stay away from rear ported.
The larger Proacs, Spendors and PMC lines use various bottom and/or transmission line venting.
As far as the room goes, that has more to do with room treatments (drapes, furniture, carpet etc.) than the speakers.
Specific speaker choices will depend on the other equipment in the system. If you provide more info in that regard perhaps you will get better suggestions.
The larger Proacs, Spendors and PMC lines use various bottom and/or transmission line venting.
As far as the room goes, that has more to do with room treatments (drapes, furniture, carpet etc.) than the speakers.
Specific speaker choices will depend on the other equipment in the system. If you provide more info in that regard perhaps you will get better suggestions.