I was wondering about which base style was better, they sell the one with solder edition (324) but the add on for solder really don't add much when I have a good solder station but the base function pivot and heft might make a difference. The price for it is a little more, not much but that is one off the question I have about the differences . The parrot vice looks to have many uses but limits on budget mean I have to be very frugal with the bench equipment. Need the extra cash for the good parts for the WOPL of my amp.