I have 2 lightweight "2P" tents:

Big Sky Evolution (i know, i know) with stakes, groundsheet this is just over 4 lbs.

Tarp Tent Squall 2 - again with stakes and groundsheet this is just over 3 lbs.

I use the Big Sky for winter/inclimate weather situations, and the TarpTent for summer. Both tents are big enough to handle me and my gear.

The Big Sky has a rainfly and has 2 vestibules, so there is room galore in there. I really like it a lot - it worked very well in a winter sleet/snow/freezing rain storm, although I did beat the wet stuff off it a few times. It kept warmth in well and definitely kept me and my stuff dry.

I once used the TarpTent Squall in a situation where the bottom REALLY dropped out of the sky. I was really happy with how it handled that situation. My stuff stayed pretty much dry despite the splashing and "misting". I also used it once in winter when it was really cold - and it offered basically no additional warmth. But it's designed to allow air to move, and so that was expected.