Next clock?

I have several ideas for clocks I'd like to build next...  Here they are in no particular order.

• A torsion pendulum clock.  Maybe with a pivoted detent escapement (see below)
• A gravity escapement.  Not sure which kind; there are several good options.
• A clock with a conical pendulum.  (This doesn't seem like it ought to even work... though of course it apparently does.)