110" image on a 120" Screen.... How will it play out...?!?

My projector has 1.1 zoom and i was thinking of getting a 120" screen on which i can project from 110" upto 120" with the level of level of zoom i have.

But i had a few doubts on which i would like to know yours & others thoughts...

- If i project a 110" on a 120" screen then i will have a certain amount of white area still empty.. i mean the image would be within the black borders unlike a 120" on a 120" screen in which case the picture will completely fill out the white screen area.

1. So how would the 110" image look on a 120" screen...??

2. Would projecting a smaller image on a larger screen nulify the effect of the black borders ? i mean the black borders are there for a reason right...?!?

http://ezinearticles.com/?Why-is-the...nt?&id=4217891

So how would a 110" image on a 120" Screen play out...?

Experts...?!?

Thanks ;-)

well my room length is 20 feet. the seating distance is 15 feet. From that distance i like 106" which i've been trying on a wall.

however if i move my sofa back to about 17-18 feet then 106" looks small and 110" to 115" looks ideal but for that i will have to move my sofa back everytime i wanna watch a movie ( slightly inconvineint )

also the price diff between 106" and 120" is not much. besides 110" is not available in my country.

so either i can go 106" and watch from 15 feet

or

i can go 120" and watch 110"/115"/120" from 18 feet... but mostly i'll be watching 110 or 115.

but i wanna know if i watch 110 or 115 on a 120 screen then how will the abandoned extra white area play out ?

i'm really confused with this. I've not been able to setup my rear speakers till now since i dont know what distance i'll be sitting...... ;-(

my sincere thanks to all ;-)