I started using the HOT BOX a couple of years ago and have no complaints at all. I like the simplicity of it. I just hold the glass wand to the glass covered element and draw in gently. I hadn't used Cannabis for over 20 years, and this was a good option when I started chemo for lung disease. It's in your price range, and easy to get off ebay. There are many good vaporizers out there, and I encourage you to take the time to find one you'll like. You'll be glad you ditched the smoke, especially if it's giving you problems. Good luck on your search.

Mo