If they tried to replace my N900 under warranty with an E7, I would throw a fit. Use it? It has nothing on an N900. The N900 was a UP+1 from their flag ship model N97. The E7 is a top nothing. Sell it? It's too old. They are obligated to give you as good or better replacement. From their portfolio that means N9. Maybe they could force an L800 on you... But that's not a top model either.