Having problems replying from here but my advice would be to go for it Flyboy. I warn you though, once bitten thoroughly smitten.
I fly both and there is no doubt that my microlight (Shadow) is value for buck in every sense. A tourer it ain't because with 2 up and a toothbrush each, I'm limited to a couple of hours at about 70-75 knots. (Mind you, my bladder's probably about the same endurance too these days!). I understand you can now hire club aircraft once you qualify too so it won't be the fait accompli I faced 5 years ago in having to buy my own aircraft.
A good three axis example is reasonably good value for money and cheapish to run on 12-15 litres (Mogas/Avgas) an hour, good hangarage rates for wings folded, fairly expensive Insurance premiums and easy, lowish cost maintenance. Most are two stroke and it is highly advisable not to skimp on top end decokes and routine maintenance. Synthetic oils are very good these days (TTS) and quite expensive but at 50:1 mix, not too onerous.
I won't quote figures here because they vary so much depending on model etc but if you Email me I'll fill in any blanks for you. Everything is relative of course but for me the biggest shock is having to look through the Spamcan "letterbox" after flying the Shadow with it's spectacular all round viz.
Permit renewal is relatively straightforward and the BMAA and PFA are terrific on advice and paperwork (lots of it !)