I must be the one of the rare ones but I had a great experience at Heldt. I went in to ask about their Penofin stains to use on an unfinished picnic bench I had just purchased. I found the fellas extremely helpful. Not only did they show me the different types of stains but they also provided instructions and tips on how to properly apply the stain.
Unfortunately the bench turned out nothing like the color I chose so I am hoping I got a bad batch of stain. I plan on going back to the store and discussing it with them. Hopefully they are just as nice the second time around!