I’ve used a few of Grenco's products. Mainly the Herbal G-Pro and the Snoop G Pen. As for style the larger G-Pro wins, but as for functionality, I like the G Pen. For me the G-Pro has some nice features, I like the variable temperature function and the snap on cap, but the simplicity and efficiency of the G Pen makes these features pointless. The main thing I like about it is the design. It’s easy to conceal and to have in open without a lot of questions being asked. You can see when your herb is being heated. I wouldn’t recommend putting more than ¼ gram of herb in there to get the best use out of it. Not to mention the difference in price; with the G Pen, it’s an all-around win.