The gear change has a solid accurate feel that really installs confidence, you can actually feel that a gear has been selected and the feel is more slick than the standard set up.
My old cables always felt like they would break and eventually they did, when you see the old cables it is not hard to see why they do..Garbage springs to mind.
My car now has a modern feel and it is actually more fun to drive, the gear changes just happen and you have more time to concentrate on steering and driving as opposed to thinking is it in yet (ohh Mrs)
No draw backs from this end it centres fine no stiffness and slick movement, The cost could be an issue for some but i look at it this way you will buy these "once" so if you are keeping your car it is a worthwhile investment..
If you are fitting these yourself then read the Wiki and save yourself a couple of days labour, my garage didn't listen and in turn buggered about for 2 days trying to set them up, if you ever had a problem then Bob is on hand and pointed my garage towards the problem which then was resolved (top bloke)
Very very happy
Cheers john

