I have the A65 combo unit. I've used it several times this season and its been a reliable unit in addition to being user friendly. After the installation, I was able to navigate through the various features without reading the manual.
If you want to save several hundred bucks and don't care about digital clarity and a larger screen, the A60 is decent.
The Silver Navionics cartography is okay. I would upgrade to the gold.
The only gripe I have about the unit is the GPS RS12 receiver. Its outdated and you will not get 100 percent GPS performance. To update the GPS system, an RS125 receiver can be purchased for $300.00. You would also need to splice the new RS125 cable to a new connector in order to have it compatible. IMO, this is why there is a fat rebate and also Raymarine has a new line of A-Series units (A50,A57 and the A70's) that is available in November 2008.
Raymarine Marine Electronics - A-Series
I was aware of the GPS issue but for what I paid (under $1000 after rebate), it was still worth buying the A65. Overall, I'm happy with my decision and Raymarine support has been great if you call the 800 number.