It depends on what the primary purpose of the safe is in your mind.
If you want a safe that a "professional" would have a hard time getting into, nothing on your list would meet those criteria.
If you want a safe to just keep nosey kids and smash and grab burglars out of, pretty much anything on your list will probably work.
If fire resistance is your goal, I can not help there as I am not familiar with the features of each safe you are looking at, but look at the fire ratings for each safe and go from there.
When it comes to safes, it is always a trade off of some kind (assuming a limited budget like you mention). Not everyone can afford to drop $10,000 on a safe.
I was in your shoes about a year ago. My collection was growing, we just bought a house and I finally had somewhere I could bolt down a safe for a long time, and we were planning to start a family (my wife is due in 6 weeks). I did a lot of research, and went to several stores to see them in person. One store in particular had a very knowledgeable sales guy that walked me through each safe they carried (everything from Sentry to high end Liberty, Canon and Brownings, my budget was about $2,000). He did not seem to have a bias as he was very good about pointing out the deficiencies of every safe in my price range.
In the end, I opted for the Liberty Fatboy. I was not concerned about fire protection as the safe is sitting on a concrete floor in a corner of my basement surrounded by cinder block and I live 2 miles from the fire department (but it does offer 75 minutes of protection at 1,200 degrees). I live in rather low-crime area so I was not overly concerned with ultimate security (and I realized that nothing in my price range would stop a "professional"), so 13, 1" bolts was good enough for me. It will keep smash and grab guys out and will keep the kids out and it will allow me room to grow my collection, and that is what I wanted.
So, in a nutshell, evaluate what your primary purpose is and go from there. My only recommendation (and it is hardly a novel idea) is to buy one size up from what you think you need. It is amazing how quickly they fill up once you start throwing scoped rifles in there. I debated the Fatboy Jr., and am glad I went one size up.