Apparently you are unaware of the difference between upconversion and upscaling.
Upconversion is taking analog and adding the video to HDMI, that is it. It works, or it doesn't. There is no "better or worse" upconversion.
Upscaling(the ability to take 480i/p and make it look 720P or 1080i/p) is "better or worse".
The best "cheap" upscaling receiver on the marker is the TX NR609...if upscaling is your main concern.
Upconversion is taking analog and adding the video to HDMI, that is it. It works, or it doesn't. There is no "better or worse" upconversion.
Upscaling(the ability to take 480i/p and make it look 720P or 1080i/p) is "better or worse".
The best "cheap" upscaling receiver on the marker is the TX NR609...if upscaling is your main concern.