I have a 4x5 Technika and got a 2x3 Technika for travel when we had a child. The 2x3 kit is about half the size of the 4x5 kit, set up in a similar way, so it is more compact.
At the same time, I didn' feel comfortable with a 2x3 view camera until I was comfortable with larger formats. If this is your first view camera, consider starting with something large enough to see what's happening on the groundglass without a loupe at first. My first was 8x10.