I can't tell you what to buy but it certainly seems like you're comparing apples and oranges. The Murano is a different class of vehicle, you're not going to dump a couple hundred pounds of Hardware/Garden supplies in the back. However, with the Ridge you can and without a problem.
I am a new RTL-Navi owner, new to Honda and a previous Nissan owner. I was originally looking for a truck though and had quickly decided on the Tacoma back in January. Now, I'm not trying to start a Taco/Ridge bash thread, I'm just trying to explain how I came to the decision to purchase my Ridge. After a test drive of the Taco I noticed, what I would call valve or top end rattle noise under moderate throttle. Afterwards I did more research on the forums and found other Taco owners complaining of the rattle noise, in addition to other issues. What really turned me off, was that no matter the issue, most owners that posted a complaint also complained that their Toyota dealer wasn't supporting them. It was in this search that I found a posting talking about a new vehicle to be released in March. So I decided to wait and so far I'm happy I did.
Now, don't think this is a post of all glory on the Ridge, as I did just post a thread about a tranny leak. Friday I picked up my new Ridge and by Sunday I was noticing a tranny leak which didn't make me happy

However, Tueday morning, after the Memorial day holiday, I drove in to the service dept and they took it in. Since I had a ride to work, they didn't offer me a car but did let me know that if they couldn't fix it by that afternoon, they would provide me with a loaner. Well, they fixed it and that evening I had my Ridge back in hand. Now I can't guarantee that every Honda dealer is going to have a great service department but I was very happy with mine.
Last disclaimer, I just passed the 100 mile mark so I can't say I wont run into more issues but if I do, I feel confident that Honda and my Dealer will make every attempt to make things right.
Oh, regarding the DVD, anything is possible if you have the money. Try going to a third party installer. There was a post from someone else who had their ride tricked out for around a grand. Figuring the Honda DVD is going to sink you back in easy $1500, not even installed, you might get a better deal with an independent.