I need some advice. I'm opening an Art Gallery and custom Framing shop in September. My business partner and I have attended framing school and are in the process of purchasing equipment. We're debating between a used pneumatic underpinner VN4 and a new Thumbnailer. Even though the used underpinner costs a lot more, we don't want to decide by price. A few people told me that the pneumatic underpinner is more widely accepted by the framing industry than the thumbnailer. Can you please share your thoughts on this? Thanks!