It depends how light you wanna go!
We needed a touring tent that would do cycle touring and motorcycle touring. We tow a trailer when cycle touring and go 2-up on the motorbike, so we needed something to pack small enough in the trailer/topbox but still leave storage for cooking gear/clothes/motorbike gear.
We looked at several tents and decided that one with 2 entrances/porches was the way to go as one can always be used for gear storage.
We also wanted enough space for 2 of us to sit inside if it was peeing it down, some tents are a bit tight on headroom.
It’s not featherweight at 2.9kg, but you can split it between 2 people easily enough, it packs pretty small, and it seems very well made, but we bought an MSR Holler
http://cascadedesigns.com/en/msr/tents/experience-series/holler/product
We’ve done a 12 day cycle tour, and 4 days on the motorbike this year and another weekend (BBB) and I have to say it’s been perfect for us.
We paid £350 including a free footprint which enables you to leave the inner at home if you so wish, or pitch it under the inner to protect the groundsheet better.
Untitled by PeterPoddy, on Flickr
EDIT
Regarding space it’s a big 3 man, technically. There’s nearly 1ft of space at my feet (I’m 5’8″) abd there’s loads of room for 2 and all our gear