I picked up a nanovault 300 over the weekend to make my use of the MS car carry more safe and secure by allowing me to secure my firearm when i go into a store or restaurant. In MS, you are legal to have a firearm in your car, concealed in part or in whole, without a permit.
I actually picked up three, one for my nephew, one for his new bride, and one for me, ya know for testing purposes.
This thing may not be impenetrable or attached to the car's engine by anchor chain from the Titanic, but it does have a hefty cable for attaching to a secure seat base or similarly difficult to remove car part. It also does not look like a pistol or anything valuable. If flipped over under the seat, the texturized black exterior looks like a number of standard automotive finishes, maybe like a seat motor or something. It is not big; it will hold an XD45 with the 5" barrel and one spare magazine. My nephew has a 4" .357 revolver; his little wife put a Ruger 9mm in hers. There was not much room for spare magazines plural, but one or a speedloader would fit.
I like the product very much so far. My only complaint would be the relatively "cheap" feel of the combination wheels and "unlock" knob.
Anybody with a BIG set of bolt cutters and some time could get this thing out of the car and open it later with a crowbar and hammer, but it narrows the risk down to a smaller group of more prepared thieves.