You shouldn't get burning from a track saw... have you replaced the blade? Saxton are very cheap but surprisingly good quality... I have an Evolution table saw, and frankly I wouldn't dream of trying to wangle a full sheet through it. It's unsafe, because it is so unstable. If you REALLY want a table saw (and not a panel saw, which is massive), then look at building it into a larger surface so you have more stability in front, at the side and behind the sheet.
Personally, I'd use my track saw every day for sheet goods, even if that's just to get 'close' to final size and trim it on the table saw if needed - but really, if you set up the track saw, there's no reason it's not perfectly accurate. I have a set of Evolution 2800 tracks (2x 1400mm tracks, so I can cut 'across' a sheet without a join, and a full length cut with only one joint...)