This is my first Yamaha keyboard and it was bought to replace an 18 year old Casio CT450 Tonebank. You will not be surprised to hear that this new keyboard simply beats my old one hands down.
I chose this partucalr model because it was a 76 key keyboard and to a lesser degree the change in "weighting" of the keys. The keys definately do offer more resistance at the bass end than the top end but as a very novice player I cannot say if this helps or not. It definately is not a problem and my only problem is that having 76 keys this instrument only just fits into the space I have available.
I like the touch sensitive keys and have found that they respond well to a light touch as well as a hard "slap". Something my old keyboard didn't do at all.
The Sweet and Cool voices are really good. I love the grand piano and the Sweet Pan\Flute voices. The MIDI voices are good and I imagine that they are common to most keyboards so very little to add there.
I like the lesson features and believe them to be standard on most of Yamaha's keyboards. I have managed to use Midi files generally available on the Internet as lessons after some minor tweaks and have created my own lessons too.
I have used both a USB cable (not supplied) and a USB memory stick (not supplied) to transfer music to and from the instrument without any problems. The memeory stick port was the main reason that I chose the V80 rather than the V60. The appegiator fitted on the V80 works well enough but is something that I will use infrequently and was only of secondary importance to me. Maybe that will change in the future?
The registration memory I would say is more than adequate for most peoples requirements and allows you to play music with distinct sections without breaks(8 banks of 4).
I like the P.A.T. system when you are playing bum notes as this seems to prevent them. Great when you are getting frustrated with a piece. As a novice player this is nice but maybe of limited use to a good player. Still if you don't want to use it then don't.
On balance I have to say I love this keyboard and I have no regrets buying it. I think people that compare keyboards in this proce range with an actual concert quality piano are doing both Yamaha and themselves a disservice and should accept them for what they are!!! excellent keyboards with a good sound quality and a good build quality.