If that's the one you want and can afford, then get it. It's certainly better than nothing. But take the time to bolt it to the floor, or wall studs, or both, so it can't be picked up and hauled off. Placing it somewhere that makes it difficult to get to helps, as does restricting access to the sides and top. Try to discourage someone from getting after it with a crowbar, or being able to grab ahold of it and yank, pry, pull, etc. And don't leave any tools avaiable that thieves could use like cutting torches, saws, big hammers, prybars, etc. Lock those up too.
The Underwriters Laboratories is the entity that determines whether these things are "safes" or "residential security containers", and they have to meet some stringent specifications to wear the name "gun safe". There's not many out there that actually do, and the prices will make you choke.
I went and looked at a nice Amsec (sp?) safe, and it was $3000. Delivery and installation would be another several hundred bucks. Ouch. And it would have to go in my garage, there's no way that monster could be taken down my basement stairs without a whole buncha money invested in beefing the stairs up to handle the weight.