Are you just crowd sourcing equipment recommendations? You'll probably get some fine replies, but you don't have any leads to go on? No requirements beyond frequency?
My advice from the VNA thread is probably still relevant here: there are the long established market leaders who would be good choices, then there are lesser known companies and upstarts which may be able to give you what you want, and if you're looking to just survey the market, going through the exhibitors at an RF trade show would probably give you most of them.