@MarkF Well, I was considering the flatbar myself as a serious possibility - something lighter than mine 17 kg MTB and versatile (btw, I have pretty slim tires on my MTB that I'm sure look quite silly). However, I have most fun riding on roads and after having a chance to spent 2 hours on a road bike for the first time in my life last weekend, I can only think of a road bike as my next bike.
I am lucky that so many good trails and towpaths are right outside my door. Go for what you think is best and enjoy yourself!
