WARNING: scientific opinions here are based on what you need, not on what you like or what your neighbor says is a better option, and I am limiting this to normal persons, you know... yung walang magnifying glassaysusmariajosep daming noobs!!!the most important factor in determining if you should go for 720p vs 1080p on a 42" TV is distance from your viewing position.
42" 720p = 8feet
42" 1080p = 5feet
if you are at the above viewing distance, you wont see pixelation.
Q: So how does the statement about BlueRay vs 720 works?
A: At 8ft you wont notice which is which, but go close to 5ft and you can easily differentiate 720p
Q: I want 42" for my sala, do I go for 720p or 1080p?
A1: If you are poor (as in mahirap ka), chances are, you have a small living room, you need to sit closer to the TV, so definitely a 1080p for you.
A2: Kung mayaman ka like me, you can sit at comfy 10' away from TV, you only need 720p
A3: If you have a really rich dad, !@#$ka bakit ka mag po portitu
Q: I want 42" for my bedroom, do I go for 720p or 1080p?
A1: Depende sa edad mo, if you are old (40s+), you need 1080p because you tend to sit closer to the TV, your pea-sized brain will tell you to get closer (as a natural reflex) pero ang totoo eye fatigue yun dala ng katandaan. Closer to TV = 1080p.
A2: If you are younger, yuppy, nagsisimula pa lang, dukha, you need 720p, chances are you are more interested in your bedroom action hence lie on a bed with TV far from the edge of the bed. Far from TV = details converge = 720p
Q: Now to answer the all important question do I need 1080p to watch HD porn?
A:
No brainer, absolutely YES! porn is something you'd rather watch up close and personal (as in 1.5' from screen) because you want to feel the action