Graham.
All the questions you need to ask yourself when considering a hardtop..
1, is it the right colour?
2, do I have the storage for it for the next 4 years?
3, do I really need it?
4, could I quickly remove it and store it safely?
5, why am I thinking of replacing one key feature of my car that would make it the same as every other "normal" car?
6, why??
Unless you plan on using your car during winter(
) or live in a dodgy area and keep it outside then they make sense but, crisp, sunny winter day with the roof down and heater up is something to savour!!