There isn't a "middle of the road" option, which sums up my feelings nicely.
I enjoyed the gameplay/plot itself, but when I was training or money-grinding for scents I fell asleep more than once. It got really tedious when you needed to get that Ho-Oh...
Still, I played XD also and found it to be a cool sequel. It improved upon much of which Colosseum started. Colosseum, however, had a more interesting protagonist, if you ask me.