I wouldn't put 130s if you are just wanting Ramstein...there are a lot of other bases that you might end up at, even being #1.
just the basic pros and cons though, only two locations for the buff, but you will be the mission on the plane eventually. I'm not sure what the cross-training is like in the buff, but I imagine they like to keep their navs around and not cross train them out if it takes a while to upgrade to radar nav. So you will be looking at a career w/ the buff, which might be good or bad, depending on how you like the mission, location, etc.
If you go 130s, you open up the doors to cross train to some of the other platforms out there, allowing you to get a bigger variety of places to be stationed, and different missions, should you choose to later. Also there are a lot of guard and reserve opportunities that you might want to think about later down the road. While you could always go this route with other platforms, it might be easier getting into a unit if you are already trained in that platform, or at least a similar variant. Also keep in mind that with the J model coming online, along with the AMP upgrade, the future of Hercs is starting to look questionable. You won't hear that at the 562nd b/c most those guys are 130 navs, and don't want to read the writing on the wall. Things change, money drives everything, hercs could have navs for the rest of your career, or they could be phased out tomorrow, no one knows.
The big issue though is that these two planes do completely different missions, and thats what you need to be asking yourself. Do you want to be hauling beans, beds and bullets, seeing the world, or do you want to be putting bombs on the bad guys? Different lifestyles for different people.