I'm a recent 1100 owner (about a month now) and have little regrets buying to upgrade/replace our One. It controls all our gear (including the SMS-1) just fine, though I'll use the SMS-1 factory remote only when tweaking the sub.  For day-to-day control so far, the 1100 works perfect.

We have the Lutron Maestro IR dimmer* (one preset lighting scene), and the RF extender is located about 15' behind the seating area, controlling that dimmer switch from about 14' away.  Works perfectly.

The eight sidebar buttons are really convenient for adding specific commands such Lights Up, Lights Down, Lights Preset, etc.  There's really no limit to how you can customize this remote.

* Regarding your 5-scene controller, which Lutron model is that? Can it be used as a stand-alone switch, or is it part of a large installed system throughout your home? I'd be interested in having more than one preset lighting scene...