The Heart Sound Solutions Signature Series Assessment Kit is by far our best deal, in terms of quality equipment for vital signs assessment and more. Nowhere else will you be able to find products of this quality, for a price this low. We truly believe it should not cost a fortune for quality assessment tools in order to take care of your patients, and we stand by this! We are a company owned by practicing Physicians and Nurses. We use our products in the field day in and day out and stand by them 100%.