G-BSEP ownership cost are all on-line
G-BSEP has put his costs for his C172 on-line to help people making a choice about ownership. This can be found at: http://www.dmjwilliams.co.uk/flying-costs.htm
For myself I think that the kind of flying you plan to do in terms of hours in the air, distance of journeys, further training and interest in aircraft technologies should guide your selection. The last point about technologies is important in determining if self-build, self-maintained or restoration of aircraft are viable routes to ownership for you.