Underlayment in rentals under laminate

[Lauren Norman]

Hi, We're renovating a 3rd (top) floor rental unit and using 10mm laminate from Lumber Liquidators. What kind of underlayment does best with rentals in medium end apartments close to Hoboken? I asked LL about Home Depot foam underlayment (which is much cheaper) and they said since its foam it has a tendency to feel unstable because of the air that is trapped below and over time it will become less and less even....not sure if this is just a ploy? Also concerned about noise- the less the tenants complain the better!