Arg, welcome. There really shouldn't be a fixed "best" or "preferred" method of scaling. As was said before, it depends on whether the scaling would be best in a particular player(if it scales), or a particular receiver(if it scales), or in the TV itself, which has to deinterlace and scale any incoming signal to fit its "native resolution" if the player or receiver hasn't already done it. All reports on the SXRD, for example, indicate that it has excellent deinterlacing and scaling, so it would be unlikely that the player or receiver would do a visibly better job of it. So, there's always uncertainty, but the best modern TVs are superb at this.
