Yes, Bernie. I bought it. I just wanted to have another tool to verify my figures. The output I get is fairly close to what I get at Financial Engines. Actually Financial Engines is more optimistic, by about $3,000 in terms of projected annual income, and I have been concerned that it is too optimistic. Of course they assume one buys an annuity, but I question whether one can actually buy an annuity that provides the payout they project. So I'm reluctant to rely on one or even two tools.
The directions for Portfolio Survival Simulator are poor - it took me some time to figure out how to use it. I use the Monte Carlo Simulations. Between Firecalc, Financial Engines, and Portfolio Survival Simulator I believe I'm being about as thorough as possible. I don't want to rely on any one tool. All three of the tools I use are in the ballpark. All in all, I'd recommend Portfolio Survival Simulator.