I am looking for one as well seems to be a lot of choice around 105 – 120mm mark, phantom,pyga, dhango, smuggler, 429, segment but not a lot in 130 – 150 range unless you spend big money. I had a prime and found it unbelievably heavy. I am after similar thing to OP and want something to handle everything really including the odd alps trip which I think I may suffer on without more travel.