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Mk4 (9n/9n3 2002-9) were the 1st to have CAN bus network and electro hydraulic steering. They really built them well and many survive without the steering system or electronics having ever need to be looked at. They are same assistance profile all the time, doesn't really change noticably, but is lighter at 0-10mph than it is at higher speeds. Its light and dumb feeling but there is still at least something there.
The mk5 (6r/6r3) that replaced it is full playstation. Steering is a little lighter, but feels like the steering components are made from plastic. Technically a more stable car, broader track, more driving orientated suspension bush style (wheras mk4 generation were more comfort/makes car feel bigger and more substantial than it is), but I have got into difficulty so so many times driving Mk5's. They just go on you, front end ploughs straight on more times than I've probably ever experienced in any other car, its like the wheels just break traction and like to slide. Then ESC kicks in, steals your power and ability to avoid it then turning into a lift off oversteer situation. So you just end up driving it more carefully IME.
BrickMan-
Yeah, I regularly find myself driving as quick or quicker in the Polo (mk5) comapred with my MX-5. Yet to hit a limit yet, but I've always figured that it would not be a smooth transition if it were to happen! Not sure how indicative it is of your average car on the road, but it does feel like modern cars are maybe a bit too easy to drive near the limit, with relatively little feedback.
mmccarthy
Would be interested to hear some thoughts on this, most likely candidate for my next car is an ND MX-5, the first MX-5 with electric power steering. Only other car I've driven with that is my wife's Polo which is probably not a great benchmark. Electric PS seemed like an odd choice to my (inexperienced in these matters) mind, but I'd hope that the folks designing the MX-5 aren't going to stick something in that'll have a significantly negative impact on feel.