We have stayed at all of the values, Music, Movies and Pop more than once.
Our experience has been that the All Stars do not always share a bus. At park closing they always got their onw bus. During the morning, we generally had our own bus, although sometimes Sports and Music shared but the bus was full so we didn't head to Movies. Off peak times, we generally shared. However, to me its not a huge deal. Maybe I am just used to some of the mods and DVC's that have multiple (as in up to seven) bus stops, but the shared route of the All Stars is quick, easy and is not a big time sucker.
Now that said, one time in all of our All Star stays we did quite a bit of sharing and we were with my in laws who were not too keen on Disney or the value resort experience and maybe it was just knowing they weren't having a good time that made me more aware of every possible downside. I will add once they left, we didn't share too much or maybe my attitude was just more relaxed and positive! That was the only time I noticed it.
As for Pop, its a huge resort so sharing is not an option at this time. Resorts generally only share within the same resort class and area. Since at this time, there is no value near Pop, it can't share. Once Art of Animation opens, we'll have to see if they share or not. I hope not, Pop's busses have always been quite full and if they do share with AOA, that might be a deal breaker for me to stay there again.
If your bf loves Toy Story, I think Movies is your resort! We love the way at any of the All Stars you have two other resorts right there to enjoy and check out including the pools, the theming is for sure the most Disney and the new rooms look great.
I don't think you can make a bad choice, I love the All Stars and Pop and honestly, go with the one whose theming is calling me. Transporation evens out in my opinion.