I went to NMMI in Roswell, NM. The 2 year route is great. There are several advanatages.
$$$$$... You get commissioned in two years and your time is service starts when you graduate. So... like me... when you eventually go on active duty, you will have at least 2 years for pay on your peers. I went to OBC, got promoted to 1LT during OBC and was making about $600 more per month.... back in 1995. Also, when I retire with 20 years in service, I will be getting paid for 22...
Second.. You get ROTC out of the way so you can enjoy your last two years of college at a civilian school and concentrate on your major. As you can imagine, your Jr and Sr years in college will be very busy with just your major course of studies. Throw in ROTC and it becomes very hectic. Now you don't have that problem.
Third, you can join the US Army Reserves or National Guard and drill with them on the weekends as a Platoon Leader..... In any unit you want to. When you get commissioned out of a Military Junior College, you are assessed a branch, but not held to it. You have to go throught the entire process a second time when you are a Senior in college. Don't worry, it is just a paperwork drill with the Army. But by drilling on the weekend with a reserve unit, you can shop around and see what branch you might like best.
You are responsible to the Professor of Military Science of your civilian university. Your responsibilites to him are .. Pass a PT test twice a year, pass all of your classes, and make sure you get a little face time with him so he knows you are still alive... that's it.
Third.. having a commission during the last two years of college... hell.. chicks dig the officers in uniform dude.