I got the Raymarine A68 with downvision sonar and Navionics silver charts for around £800 at the LBS last year. It's touch screen, easy to operate and hasn't let me down at all, even in heavy rain or spray situations. You can use "normal" sounder display or downvision; the downvision is like looking at a TV picture of what's underneath you too - the kids love it!! It's a great plotter with lots of scope to interact with anything else you want to throw at it (NMEA2000 only though unless you expand to a SeaTalk network).
Once again though, I'm sure there are as many recommendations as there are members on RIBnet!
There's weather out there - must be time to RIB!
(Or dive, or ref rugby, or.......)