My home-made router table includes a Routalift mechanism for raising and lowering the router to adjust the cut without the bending and squatting generally associated with that. It works very well indeed, and allows me to make micro-fine adjustments to the cut. Because it’s so easy, it means I can fine-tune the cut on scrap timber by trial and error, making hair’s-breadth adjustments to get it spot on.
Having said that, the world’s moved on since I did this and there is now an abundance of routers designed to be inverted under a table with fine-adjusters worked from above - which makes the outlay on both a router and a lift system unjustifiable.
It’s great kit, and I love it - but were I starting from scratch now, I’d just go for one of the high-end routers such as a Trend T11 or a Triton and bypass the need for a lift system.