I have a SmartStrike and love it. I dont follow the SmartStirke features (fishing location suggestions) very often, but I will typically turn them when I go to a new lake or want to find a new place to try out. I wish the Smart Strike feature took a few conditions into account, but it is definitely worth the money in my opinion. This place has the best prices on Map cards that I have been able to find - http://www.ultimatepassage.com/cgi-bin/u...escription.html
I also have Navionics for my bow graph, and just map to map comparison I prefer the Lakemaster.