It think it is going to be personal preference. I prefer Dansco albums, but if you do not mind the original packaging, keep them there. Neither one is air tight and I do not believe either one has a preservation advantage over the other.
That being said, any capsule based system would/should offer more protection from the environment than an album or the OGP can provide. However, albums and OGP kept in a controlled environment should hold up just as well, at least that is my experience.
I'm doing both - one set in OGP and another I'm cracking out to put in my Dansco albums. I'm using my Albums as a source of reference - if I need to look at a coin somebody is asking about - out comes that album to compare it to. Faster than searching on the net.