Redstone circuits/Transmission/two-way repeater

Locked-Repeater Two-Way Repeater

3×4×2 (24 block volume)
flat, silent
circuit delay: 1 tick
fastest clock signal: 1-clock
two-way reset time: 3 ticks

Comparison Two-Way Repeater

2×5×2 (20 block volume)
flat, silent
circuit delay: 2 ticks
fastest clock signal: 2-clock
two-way reset time: 4 ticks

CodeCrafted's Two-Way Repeater

2×6×3 (36 block volume)
silent
circuit delay: 2 ticks
fastest clock signal: 3-clock
two-way reset time: 3 ticks

The powered torches are above redstone dust which has configured itself to point towards the unpowered torches underneath the blocks.

Instant Two-Way Repeater

4×4×3 (48 block volume)
instant
circuit delay: 0 ticks
fastest clock signal: 2-clock
two-way reset time: 2.5 ticks

Under the sticky pistons are 1-tick repeaters facing away from the torches.

Moved-Block Two-Way Repeater

2×5×2 (20 block volume)
flat
circuit delay: 1 tick (rising edge) and 0 ticks (falling edge)
fastest clock signal: 3-clock (but shortens pulses)
two-way reset time: 1.5 ticks

Classic Two-Way Repeater

3×4×3 (36 block volume)
silent
circuit delay: 2 ticks
fastest clock signal: 3-clock
two-way reset time: 4 ticks