I've recently gone from a Dewalt DW331 to the corded Carvex. There was nothing wrong with the Dewalt, it was and still is a perfectly serviceable saw. My reason for upgrading was my dissatisfaction with dust extraction and straight cuts.
It's a little ironic really that the Dewalt gets rid of dust from the cut line quite effectively, the only problem with it is that it shoot the debris forward via a stream of air aimed forward of the blade. The saw is now relegated to metal and rough lumber.
I understand that the Trion has similar blade guides to the Carvex, if so then it is a reasonable upgrade comparative to a Dewalt in my opinion. Can't comment on the dust extraction on the Trion however.
I would add that the multiple base option on my Carvex has proved it's worth several times and the strobe effect is superb for a clear sight of the cut line.