I've had my Groove for a couple of weeks now and I really like it a lot. I have a MVP and a gripper as well but I like the Groove the best. It is made of a much more durable plastic than the Gripper plus it has VV and VW. They also have a stainless steel model out now. It has many more features than the MVP plus the 3800 mah battery lasts for days.
I'm surprised more people haven't tried them.
I'm surprised more people haven't tried them.