I've got a CH products yoke :
http://www.chproducts.com/index.html
and Jeppesen flightpro:
http://www.jeppesen.com/prodserv/flitepro/
In the US--total cost (with all US charts on 3CDs, flitepro, yoke): about $200. I understand that european charts are also available.
I find flitepro to be unstable enough that it really helps the scan. Also very useful for trying out an approach when I'm heading into an unfamiliar airport.
Only problem--only 2 planes: a Bonanza and a 172. Perhaps on-top or Elite are better in this regard.
[This message has been edited by Low_and_Slow (edited 09 April 2001).]