I do both, I have a group A share, and a microlight outright, each is worth somewhere around £3-£4k.
- For fun local flying, trailering off on holiday with me, dropping into tiny farmstrips, I take the microlight.
- For the enjoyment of long trips, at fair speed and in good comfort, on other words the joys of travelling by air, I take my shared PA28.
Take your pick - it depends what you're after from your flying.
Mind you, apart from the open cockpit bit, FlyStimulator's CT2K will do both, but ain't cheap, even by SEP terms, let alone microlight terms - although I'd guess that it probably (apart from insurance) doesn't cost much more to run than my flexwing.
G