This is a very versatile and hearty unit. Feels solid and durable. The glass inserts however are very fragile and can be ordered from many vendors as replacements. Just don’t drop them 🙂 Opinions: This was the first dry herb vaporizer I purchased, and there are a lot of things I love about it. With a. Few things that could use some improvement. Nice carrying case big enough for two bowls of your two favorite strains. Sturdy design and use. Great air resistance that feels like smoking. Wonderful accessories and easy replacement of components. Replaceable battery. Very slow to heat up comparatively to other devices. Very noticeable odor after use which is also more than its competitors, not very stealthy after use.