I am using Supers E's in a similar sized space with an open room leading to another and have no problems driving them with a 30 watt tube amp. In my room they cast a wide sound stage and fill up my space easily.
I think you will find they are refined and very resolving, not bloomy or chubby at all with a nice tight bass. While I would not call them naturaly full bodied, they could be and are quite musical depending on your upstream components. They don't add much character of thier own but I beleive they will let you hear your components true capability.
The only problem is you really have to get that right but after living with the detail of the Coincidents it would be hard to go back.
Trevor
I think you will find they are refined and very resolving, not bloomy or chubby at all with a nice tight bass. While I would not call them naturaly full bodied, they could be and are quite musical depending on your upstream components. They don't add much character of thier own but I beleive they will let you hear your components true capability.
The only problem is you really have to get that right but after living with the detail of the Coincidents it would be hard to go back.
Trevor