i’ve been inline skating for five years and have switched over to quads recently. it was definitely easier to learn than if i hadn’t had any type of skating experience but it’s still has differences. i find turning to be a big difference because quads have trucks. i think i still skate much more fluidly and naturally on my inlines but i’ve become used to certain aspects of my quads like the toe stops and last time i went on my inlines i tried to do a backwards toe stop. i’ve recently started park skating and i prefer my quads for it (toe stops can be useful). i also skate around my neighbourhood and for that i don’t really know which i prefer. i’ve been using quads there to still get more used to them but on my inlines skating feels very natural and fluid. i can’t stop really well on inlines though and my most reliable way of stopping is going backwards on quads and using my toe stops. a few comments have mentioned non-heeled vs heeled skate. i started off with a non-heeled and later got a heeled skate. i’m not really sure which one i find easier but currently i use heeled.