Once you have your hands in the right starting point (using the `j` and `f` key cues) why do you need any more tactile help? Isn't the entire point of touch typing that your hands "know" where all the keys are?
On the other hand my Apple keyboard is by far the keyboard I'm most comfortable using, the logitech illuminated keyboard coming second. I generally don't like all those ergonomic keyboards, they are all too bulky and take up too much space on your desk.