Befor i,m called a ludite i would like to point out i do use a GPS but it is fixed in the panel and can be selected to drive the HSI if i so wish it it is aproved for IFR navigation.
I,m all for GPS but i think that some of the kit at the low end of the market takes too much button pushing and head down time and the mountings for some of the units seem to me to get in the way when used in a light aircraft cockpit.
This leads me to think that the map has a lot to offer over the cheap GPS.