How can you run a business on out-of-date software? While I disagree entirely with the way WHMCS (and other companies) have dealt with loyal lifetime license holders, I cannot fathom attempting to run my business on out-of-date software (which also means running on out-of-date PHP etc)... As much as it might suck to pay them monthly, at least you get up-to-date code. The new PayPal module in the beta version is really good (so far)... This alone would be worth upgrading for.