I like variety, though it's fair to say there is a lot of diversity in dark beer. I enjoy lighter-coloured beers, with the caveat that they are hoppy and bitter. If there is sweetness, I'd rather it was fruity rather than sugary or malty. I've never liked the traditional Scottish 80 shilling ales, because they tend to be malty-sweet. This is understandable because hops don't grow in Scotland, but of course we get hops from all sorts of places these days, so beer is more diverse than ever before.
It's interesting, though, to try some of the beers based on old fashioned methods, such as heather (fraoch) ale and beer made from porridge oats. Williams Brothers do a good version of the former and there is an excellent porridge oat ale from the Isle of Skye brewery.