For the $1k mark you can get the Garmin 70Dv. So that has GPS with garmin G2 maps, 10GHz gps antenna, fish finder and down view built in. One transducer. Its a great unit and holds bottom underway. Has all your water temp, speed, conpass bearings on screen. Pretty happy with it.
I too was considering the lowrance one and raymarine but i prefered the graphics on this unit. All other units are good too. Personal choice really.