What is your opinion of this product?
Amazingly robust construction. Mostly all metal with resilient vacuum switches. Allows you to have your amp's true tone without any coloring at all while providing you with its vast array of effects along with your own pedalboard patched in if you want. When required, you can apply its excellent modeling patches which sound great (it has an excellent acoustic patch that sounds incredibly like a dreadnaught). Like I say in the title, it gives you the best of both worlds. As a side note, I've dealt with Digitech's customer support in the past and they are second to none. Quick response, highly knowledgeable, and they consistently bend over backwards for the customer. Highly recommended, both the RP1000 and their service.