So I ran across some of these and was wondering if anyone knows anything about them. Are they worthwhile and how well are they built?

They build a good safe, I have one of their fire  resistant models. Browning also builds a good one for the money. All gun safes are pretty much the same even though they tout all different kinds of fancy lockwork and features. If you want a real safe, you need to buy a TL30 or TL15 jewelry safe & reconfigure it for guns. Otherwise, an AMSEC or Browning, or Cannon, or one of many others will do fine. A big deciding factor is fire protection & the interior configuration. Prices vary all over the place too. I got the best deal from A.G. English, they're online.