I graduated from ETP in 2006 and was really happy with the program. In fact, I liked it so much I did my MPH and I am currently working on my PhD at Columbia as well. While I've seen some negative posts on this site, some of which seem legitimate gripes, I don't personally know anyone who wishes they had gone somewhere else or was dissatisfied with the program.
It's a very intense year and you really have to be prepared for that. The faculty here are open and supportive but no one here will baby you. Also, remember the focus of the program is to prepare you to move on to the NP portion, not to prepare you to do beside nursing, so the coursework is focused on critical thinking, clinical knowledge, not skills. Some of the complaints of heard in the past have been primarily from people who had no intention of finishing the masters portion and didn't feel we spent enough time on skills. On the other hand, reading posts about other schools
on this site (schools where people stated the graduated without ever inserting a foley, giving an injection, etc), Columbia seems to do alright. When I got my first clinical job (several months after I graduated) the skills lab instructor agreed to meet with me and go over some of the skills I needed for that particular job. The director of the program knows every ETP student by name and is aware of how they are progressing, she really cares about students success even if she seems overworked and busy (which she is).
Oh, we also got a new dean, Bobbie Berkowitz, who I think is going to be an amazing and forward thinking asset to the school. Especially for people like me who are really interested in community health. There's more info about her on the CUSON homepage.
Anyway, good luck with your decision. I don't know much about JH but sounds like you have a tough choice to make.