Kikuyu vs LM grass
The honest answer depends on your garden. If you have a sunny, open space that gets a lot of use, kikuyu lawn is probably the better choice.
Kikuyu Grass grows fast, spreads quickly and bounces back from wear in a way that LM grass simply cannot match. It does grow faster though, which means you will be mowing more often during the growing season.
LM Grass suits gardens that have trees, structures or fencing that creates shade for part of the day. It has a finer leaf and a softer texture than kikuyu, and it grows more slowly, so the maintenance load is lower. If your garden is relatively sheltered and not subject to heavy traffic, LM grass will give you a neater, lower-maintenance surface.
The short version: kikuyu wins on toughness and recovery, LM grass wins on texture and low maintenance. Your garden conditions will tell you which matters more. Find out more about Buffalo Grass as an option and the difference between Kikuyu vs buffalo grass here.