I only ever use my current iPad Air (2013, 9.7") on my couch. It's time for an upgrade, right? I am debating between the larger 12.9" iPad Pro or 10.5" iPad Pro. I will never use it at a table. Is the 12.9" iPad Pro designed for use on a table, or can one appreciate it amazingly on their lap without any struggle? Has anyone gotten 12.9" after using a 9.7", and regretted because their iPad was........ too big?