Your lens choice criteria of size, weight and budget are naturally all valid, however, I'm more curious and interested in your reasoning and motivation behind your lens choice criteria.
So, why size, weight and budget?
And why not, aesthetic, creative, experimental, expressive, playful, artistic... the list goes on.
Sally Mann explained her lens choices and I doubt very much, if there was any similarity to yours.
So what I'm trying to say, is maybe it's not your lens choices that needs rethinking but rather what's behind your lens choice criteria.
So indeed for you to answer your own relevant questions of will "smaller, lighter and cheaper" be better? And will they suit your projects?