hi guys , I know you've had a thousand ppl before me in this position and you will have a 1000 after me as well but im standing on a knifes edge one side sits HO and the other side sits N. to cut a long story short im swinging towards N gauge and with my benchwork nearing completion i really need to start making up my mind which way to go, if i choose N then i have much more options with the remainder of my bench design but i need to know a few things b4 i can decide... can i have dcc N gauge locos with sound? (this is probably my biggest concern for N) will i need to reduce my grades with n compared to HO? (as part of my layout climbs up and over a water heater) is there possibility for automatic uncoupling with N? (as in magnetic uncouplers or something).. if you guys could shed some light on these three things for me i would then know enough i think to make my decision... i thought id also post a couple of pics of WIP benchwork. (there is alot of ply just sitting on the tops that is not part of the permanent benchwork but at least you get the main idea of what ive got to work with, its a 21 foot run down the wall and 9 foot wide return in front of the garage door, i also plan on having another peninsula to create an F shape layout if i go with N. also note the section where the layout will need to climb up to go over the water heater.