Flying just for the fun of it, nothing can in my opinion beat a microlight, only if you want to bring a passenger.
The silly legal limit of 450 kg (or 472.5 (!) kg in Germany due to need to have a BRS) renders these flights very short, if you want to stay legal, considering that most modern microlights have an empty weight of around 300 kg...
Other (minor) disadvantages are the lack of harmonisation of rules within Europe (which, for example, can render flights abroad difficult (Denmark!)) and that there are some rather dodgy and/or flimsy designs around.