I don't think anyone will dissuade a die hard whizz wheel supporter to change, and fair enough. It works. Similarly there's no reason to critiscise anyone using a more modern method, such as the various pda/phone tools.
However there is only one thing that people ought to agree on, and that is that hopping into the aircraft, putting a goto on the gps, and then adjusting the heading to fly the magenta line is a high risk strategy that will let you down badly one day.
There's been very little talk here of the 'rules of thumb' methods that rely only on brainpower, and were designed for use on the fly, if you'll pardon the pun. The one I was taught involves calculation of the maximum drift based on the airspeed (TAS/120 times windspeed), and then working out how much of that you're likely to get based on your heading relative to the wind (the clock rule). This particular tool is accurate to within wind forecast and flying ability limits, and clearly has the advantage in that any failure of the processor has much wider consequences than simply navigation !