After reading as much as I could on the AVS forums and others, I decided to go with a 2.35:1 screen because movies are the main focus for my theater and widescreen was the prominent AR for my favorite movies. After finally getting all of the pieces/parts together and setting everything up, some issues came up that I hadn't thought of and didn't read about. So I thought I'd share my findings for what they're worth. 
I made my decision knowing that I would have to manually zoom in/out for 2.35:1 vs. 1.85:1 vs. 1.78:1 (I have the Epson 8350) and mask the sides as appropriate. I figured adjusting the zoom as needed from time to time was no big deal. I also knew that without an amamorphic lens, to fill the wider AR, I would have light overcast at the top and bottom of the screen (it is still projecting a 1.78:1 image after all). I just added masks above and below the screen to absorb the overscan. However, two issues came up that I did not take into consideration.
1.) Menus and many extra features are still in the 1.78:1 AR. So if you're set up for 2.35:1 the top and bottom of the these are cut off. Depending on menu layout, you may have to adjust for the menu and then back to 2.35:1 for the movie. Even that wouldn't be so bad except for issue #2.
2.) I did not realize that when using the lens shift function that the zoom would be affected. Everytime I zoom in/out I also have to adjust the vertical lens shift. So each AR correction with the zoom also requires a lens shift correction. Double the adjustments, and with issue 1, twice as often as I thought.
These are not deal breakers by any means, but without motorized controls it can get to be a hassle. I am still very satisfied with my HT and love the impact of the large cinemascope visuals, but just know what your getting into if you go the same route as me.
If by chance I am doing something wrong and should not be seeing these affects, please let me know!

I made my decision knowing that I would have to manually zoom in/out for 2.35:1 vs. 1.85:1 vs. 1.78:1 (I have the Epson 8350) and mask the sides as appropriate. I figured adjusting the zoom as needed from time to time was no big deal. I also knew that without an amamorphic lens, to fill the wider AR, I would have light overcast at the top and bottom of the screen (it is still projecting a 1.78:1 image after all). I just added masks above and below the screen to absorb the overscan. However, two issues came up that I did not take into consideration.
1.) Menus and many extra features are still in the 1.78:1 AR. So if you're set up for 2.35:1 the top and bottom of the these are cut off. Depending on menu layout, you may have to adjust for the menu and then back to 2.35:1 for the movie. Even that wouldn't be so bad except for issue #2.

2.) I did not realize that when using the lens shift function that the zoom would be affected. Everytime I zoom in/out I also have to adjust the vertical lens shift. So each AR correction with the zoom also requires a lens shift correction. Double the adjustments, and with issue 1, twice as often as I thought.
These are not deal breakers by any means, but without motorized controls it can get to be a hassle. I am still very satisfied with my HT and love the impact of the large cinemascope visuals, but just know what your getting into if you go the same route as me.
If by chance I am doing something wrong and should not be seeing these affects, please let me know!



















