Trackpad is great in both. Super smooth texture and very responsive. I have no complaints in this department at all.
The yoga screen is gorgeous to say the least. 100000x better than the 9 15".
Get it at this price. Its a wonderful entertainment laptop for use on a couch or at an airport lounge while touching up your presentation!
I got the 15" 9 series because i cant use excel or word and doing research for 8-9 hrs straight on a 13.3" screen.
That's how I feel about the 15" vs 13" Series 9. I think I'd prefer something where I can reasonably have 2 windows tiled whereas with a 13" it's quite squished. Good to hear about the trackpad, I think I'll end up going with the 9 as this is more for schoolwork and not so much a hangout device.