7 years and no screen issues? That is lucky indeed. I'm far from technical but there must be some kind of power supply or design flaw that causes some of us to have so many problems. It was particularly disappointing that Tascam itself only offers a 90 day warrany on replacement parts so when I contacted them to say my latest screen lasted less than 1 year all they could do is refer me to parts because apparentely $200 for a 90 day useful life is good enough.
As far as comparing to the presonus, there are other great things about the 4800 that I will miss if I give it up - the routing flexibility, 96k recording (presonus max is 48k), remote layer, built in talk back mic, automation, etc.
But in the presonus's favor it has 32 M/L inputs all on one layer, a far easier to use fat channel and effects routing, easier to assign some channels to slot output before or after the fat channel, better meters built in, and the remote control is really game changing.
In my case because I use the board solely as a recording studio tracking device and audio interface I don't take advantage of many of the features it has. For instance I don't use the automation, bus routing, scenes, transport controls (which suck in PT becasue I can't get them to work as I'd like). I do wish the presonus had just a few more channels, even an extra 8 without M/L inputs on a 2nd layer would have been perfect.
I'm going to post some pics of the board and desk later today, and I ordered a new screen so will replace it when it comes next week.