My family comments wouldn't count. My wife would be 'it's just a train' and my four year old would be a mini me (God help us all!).I had a similar trip on Thursday but the outward working was a 700. Made for quite an interesting direct comparison. There were immediate comments from members of my family about the sockets and tables on the 387 (and absence of them on the 700.)
One lady on our trip who commutes to London daily from Bedford did say that the new trains (the 387s) break down a lot. She hadn't been on a 700 yet.