One advantage of solar panels not yet mentioned is that they are incremental so you can easily add more when budget and need dictates. With a wind-generator, if you buy one too small it is very expensive to upgrade it as you have to sell the first and buy another.
I would advise you to get a couple of solar panels, see how you get along with them. I would also advise getting an amp-hour counter at a relatively early stage, as that will give you a much better understanding of what you need and what you are getting. Defintely buy an amp-hour counter before getting a wind-generator as otherwise you risk ending up mistakenly buying too small a wind generator.
Wind generators are by no means all noisy. Only the Air-Marine is really noisy, The Aerogen range are relatively quiet, and the Rutlands really don't make any annoying noise at all (well mine doesn't).
I think the Duogens look rather dodgy and inefficient. If you must get a dual-purpose generator, get an aero-aqua4gen from LVM. It is a proper wind-generator when in wind mode, and a good water generator too.
I am in the Med and have both solar and wind and both are very useful, particularly at anchor. They are less useful when sailing as the sails shadow the panels and the wind generator loses efficiency on some points of sail. I would like to add an aqua4gen at some point to provide good power on long ocean passages.
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