I've installed a few of his channel boards and they work well, and are basically plug and play in Galaxy radios, a little more work in other radios. They have all worked as advertised, and when I have had questions, I usually have a reasonably quick response.
That was some time back, and I have noticed a price increase on his products that are a little more than I would expect compared to initial pricing. But I guess everything goes up.
I don't know if I would buy one of his custom radios though as they are quite pricey.
But, a year is kinda pushing the envelope a bit no matter how you look at it.