I have Maia which is a resin a bit like corian only thinner (corian is full depth resin, Maia is 4mm resin mounted on a core like laminate normally is). Mine is black with speckles.
It scratches like a bugger and requires enthusiastic/careful cleaning with washing up liquid, rinse, then polish off with e cloth. I do sort of still like it but it is a total PITA.
I avoided granite, as polished granite etches really easily with acid (red wine, vinegar, tomato based sauces including tinned stuff like beans, citrus etc). I feel I just moved the problem!
From what i can gather, paler colour resin's (corian, maia etc) are much, much more forgiving than dark colours; laminate is actually the most genuinely indestructible (and worst case, is cheap enough to replace if you really knacker it). The rest of the market is varying degrees of expense and compromise! I do still like the look of my counters, but if I had known the amount of faff I would probably have gone for granite (and faff) as opposed to resins (and faff) as I think the real granite potentially tips the balance on looks - I chose mine for my perceived ease of use and cleaning, which was bollocks.