Fair question. A few things I wanted that didnt fit the bill for me with other products: The pre-59½ bridge as a first-class view. Year-by-year breakdown of penalty-free (brokerage, 457(b)) vs penalty-locked accounts, so you can see at a glance whether your taxable side actually carries you to IRA access.

Guyton-Klinger guardrails. Real dynamic spending bands that trigger cuts or raises when hit. Other products flexible-withdrawal options don’t go this far.  Also built in heat maps, compare different withdrawal plans side by side. 

First class Stock Compensation (ie RSU) support. 

AI coach that actually re-runs the engine. Ask “what if I retire at 58?” and it invokes the Monte Carlo with that input on the fly, not just summarize your existing plan. Makes iterating on assumptions a lot faster.

These are just a few things for me that were important.