bpster; at a TAS of 90Kt a wind speed of just 18 Kt will have about the same effect as a wind speed of 82Kt will have on you at 420Kt! I tend to use MDR myself for preflight planning but, and I think we can all agree here, accuracy is very important!
Regular practice is required to keep up MDR skills and indeed to keep up to speed on the spin wheel; if you are a part time leisure pilot why spend time doing both? I can plan just as accurately with MDR as I can with the spin wheel and as a professional I have time to keep up to speed on both so I can and do use either as convenient.
3 Point