I agree with you. I would though recommend taking the regular bus around the whole of Arran. The south side of the island is brilliant.
I have done the full Arran by cycle (from south to north) and this is a tour I would rate among the best in the world. More about Arran, my cycling and my whisky tastings at www.toroddfuglesteg.com
As for the landscape and scenery of Arran, I would put Arran just behind Isle Of Skye but just above the likes of Mull and the rest of the Highlands.
I rate myself as a dedicated fan of Isle Of Arran. For those who plan to visit Scotland; don't even think about leaving Isle Of Arran out of your visit !!