Depends on what your budget is. People who say buy once cry once generally have plenty of disposable income. But you can only afford what you can afford. I've been very happy with my cannon. 20 gun safe. Got it for Christmas last year. I think it was $599.
I've been very pleased with my Cannon safe as well.
IMO, a decent safe is going to be sufficient to protect your stuff from thieves who will be in and out of your home quickly, as most are. The extra security at a higher price is more for those who live in more isolated areas where thieves can stay longer without detection.
A good topic from past discussions focused on which type of lock is best. According to the comments shared, traditional dial/mechanical locks are more reliable, but take longer to open when you need to reach a firearm quickly. Electronic locks offer quicker access, but are less reliable.