I just purchased a Vanguard and was given a 50 amp subpanel with it (30+20). For some reason, the guy who is installing the spa is telling me that he prefers the 60amp subpanel. I called the dealer and they told me that they "Never" use anything other than the 50amp one with the Vanguard. I got the 30+20 for free from the dealer but they refuse to dispense a 60amp one. Obviously I could purchase the 60amp from some other place, but is it worth it? I definitely want to do what's best and I don't care at all about the cost if it's going to provide a more reliable experience going forward. Any advice appreciated.