I respectively recommend that you recheck your vertical height measurement. If the 36 inch Wega has a standard 4:3 aspect ratio, the vertical height would be 21.6 inches. This would be commensurate with a 44 inch (not 46 inch) HDTV. This may be a moot point since screen sizes seem to jump from 42 inches to 50 inches with no choices in between.
Another thought is that most movies are shot in a wider aspect ratio than HDTV's 16:9. Many are shot at 2.35:1. When I watch a movie in widescreen format on my HDTV, I have black "bars" across the top and bottom of my screen; the TV displays the full width of the picture and wastes some of my vertical screen availability. Accordingly, when I bought my HDTV, I was replacing a 35 inch standard tube TV, and I wanted to preserve my vertical image size for movies. As a result, I wound up buying a 55 inch HDTV.
Without going into a lot of math, the conversion for this is 1.62 times the diagonal of the standard screen. For your 36 inch standard screen, you would get a 58 inch HDTV. The industry makes 55 inch and 60 inch HDTVs, so you would have a choice.
Another thought is that most movies are shot in a wider aspect ratio than HDTV's 16:9. Many are shot at 2.35:1. When I watch a movie in widescreen format on my HDTV, I have black "bars" across the top and bottom of my screen; the TV displays the full width of the picture and wastes some of my vertical screen availability. Accordingly, when I bought my HDTV, I was replacing a 35 inch standard tube TV, and I wanted to preserve my vertical image size for movies. As a result, I wound up buying a 55 inch HDTV.
Without going into a lot of math, the conversion for this is 1.62 times the diagonal of the standard screen. For your 36 inch standard screen, you would get a 58 inch HDTV. The industry makes 55 inch and 60 inch HDTVs, so you would have a choice.