My opinion - don't cheap out on a bargain pistol box that can be opened by banging it or using a paperclip. Get a high quality box with a Simplex lock.
I have two - A Fort Knox (below) and an older V-Line. Both are rock solid, but if I was to buy a third, it would be another Ft. Knox. I've also heard good things about Amsec, but I don't have any experience with them.
My V-Line is the classic flat style design with a hinged top, but I tend to prefer my Fort Knox, which has a spring-loaded door that swings open when the box is laid flat:
...or provides an open assist when the box is vertical, which is how I keep it:
It can easily accommodate two large frame pistols when it is vertical. Might be tougher to manage two pistols in it if it was laid flat. If that's how you would want to set it up, I would recommend
this instead.