Lightweight ideas please!

I love my tx2. And heavier lenses (although I find I usually end up with a 35mm on there) but I need something I can Chuck in my pocket and carry around lighter.

Would an xt20 with a 27mm be a good idea? I love my 23mm. Should I stick with that? I have a feeling the xt100v would annoy me with the side eye viewer

Any other suggestions I havent thought about ? I wish I had unlimited funds too