Lowrance Airmap 1000.
Pros: nice big screen, excellent mapping*, good route planning facility, ability to turn any waypoint into a pseudo-VOR, runs on aircraft power, comes with loads of accessories (several different brackets, external antenna, &c.).
Cons: not cheap (though cheaper now), *excellent mapping costs extra for UK, no automobile mode despite having the mapping for it, uses AA batteries fast if not powered from cigar lighter, quite large, monochrome only (there is of course the 2000C which is colour), no IAPs in database, only ICAO-coded airfields in database (and if you create a waypoint yourself it can't be designated as an airfield).
Would probably buy AvMap now if starting again, despite huge cost.
Tim