Which is better?

This:



or this:



In both cases, the unfamiliar symbol represents a delay. I use a Greek delta (Δ) to represent transmission line delay, and a square to represent inertial delay in equations, so I want matching circuit symbols. There aren't really any nice standard symbols, other than some quite yucky ones from the async literature that I don't really want to use for aesthetic reasons. I won't say which one I prefer, because I'd rather hear an unbiassed opinion from you lot.

[Poll #417272]