The gokz-hybrid from zer0k-z

HybridKZ is a modified version of SimpleKZ and GameChaos's game mode.

Features

Prestrafe

Much faster prestrafing compared to SimpleKZ, the time to prestrafe to 276 is the same as the time to nopre run straight to 250 (eg. vanilla).
However, you can't prestrafe with just one or 3 movement keys.
Prestrafe bonus is not reset upon changing prestrafe direction (WA to WD for example)
Prestrafe increases the minimum bhop speed from 250 up to 276.
Prestrafe gain is preserved in air (as opposed to 0.175u loss every tick in SimpleKZ).

Doubleduck

Quickly ducking and unducking on the ground raises the player by 36 units (or 27 if you land while standing).
In contrast to GC's doubleduck, you can do this under a 99 height roof instead of a minimum of 108.
Doubleduck speed loss now depends on the landing speed. The faster you go, the more slowed down you get with double duck (up to 25% reduction).
The tick window for doubleduck to preserve speed is 5.

Stamina

Added landing stamina, which slows player upon landing. Landing stamina depends on vertical velocity upon landing. Landing stamina is not applied upon doubleducking.
Stamina slows running speed up to 50% and jump height to a minimum of 48 units. The maximum speed penalty is reached at 750u/s, while the maximum jump penalty is reached at ~266u/s (lowjump landing speed).
When you land you still have the prestrafe speed modifier but slightly slowed down by stamina.
Current version of stamina does not affect acceleration (airstrafe included), unlike vanilla CSGO.

Bunnyhop

Bhop prespeed formula is similar to GameChaos's bhop cap, but it is now dynamic. The bhop cap is your previous takeoff speed + 32.5 with a minimum cap of 325 and a maximum cap is 650. You can reach this in 10 perfect bhops.
Perf window is 3 ticks, the soft ground speed cap applies after 4 ticks, and there's a 5 tick window for doubleduck.
Every jump has the same height as a crouch jump, with the exception of jumpbug, which varies from 55.8 to 57.8 units.
Perfs are now nerfed for consistent bhop height.

Misc

Jumpstats display is broken due to jump height fix. Use !jsalways to display distances.
Doubleducks are used to get better edge and speed for the next bhop, or to fully restores stamina from a flat ground jump. High fall requires multiple doubleducks in order to fully mitigate stamina's effect.
Good double/multi doubleducks can help you reach 325u/s.
Stamina's effect on running speed is small on flat ground, but noticeable from a big fall.
Bhop is almost always better than LJ, except for height, but you can't gain bhop prespeed by jumping and turning 360 degrees.
Speed control is very important on the first few bhops as you can easily lose speed by overstrafing, after reaching 450u/s it becomes easier to keep your bhop prespeed, but you need to handle the high speed instead. You will hover around 600-650u/s at maximum bhop momentum.
Many maps seems to be much easier to complete but much harder to fully optimize. Some other maps are impossible to complete because of stamina/high bhop jumps.
Replay bots are not well adjusted to HybridKZ yet.
Ledgegrabbing is possible on almost every height if you use the correct technique (Double duck for anything under 36 units, flat ground bhop for blocks under 48/57 height, and normal jump for 57/66 blocks). Ledgegrabbing effectively nullifies stamina's effect, allowing you to have a full 57.0 height jump immediately afterwards.

A list of tested maps can be found here.