What's the general consensus on a good one? It would definitely be beneficial if it were convenient/easy to use.

I know they cost. I don't think that's TOO much of an issue when I count all the vintage guns, Damascus and Fluid steel, I own.

Where to buy it? that's another category where convenience would hold a trump card.

I appreciate your help, gentlemen. This has got to be the best website forum to ask this question and get well informed, experienced answers. Many Thanks - Marc