Most of my sessions are either days, or 24 hours so I tend to use a brolly.
Off to France in July with my daughter, so was looking for something a little more "substantial" for a week under canvas so my wife bought me a Quest 2 man bivvy. It's my 1st "proper" bivvy, and only cost £149.00 brand new, (didn't think it was worth spending any more on something that was only going to get so little use). Gets very good reviews, and doesn't look too bad at all.
I could have got another make in a one man version, but fancied the idea of the two man as I don't like having everything cluttered up around me. For £149.00 I think it offers terrific value.