Have had several...never did anything for me and sold them... I mainly shoot DA revolvers DA and compared to a K-frame Smith Colts just don't compare.
...but a very classy looking piece...
Funny story about Diamondbacks....LEO friend who was big into guns called one day. He had been looking for a 4" .22 Diamondback...this was back in the early 1990s when they could be had for about $350.00 and seen at most gun shows. He tells me he had seen one two days ago in a local shop, "but it was a .22 Magnum so I passed on it." There was dead silence on my end when he asked if there was anything wrong... I told them that there were only a few Magnums made the first year of production and they were worth over double what a Long Rifle sold for... The shop had wanted $375 and it was sold when he called back. I've seen a couple sell on GunBroker in the last few years in the $2500-3500 area...
A friend bought a LNIB 4" .22 and found a brand new extra cylinder that he had chambered for .22 Magnum...nice setup...