I used to file a complex T1 for myself and a ridiculous T2 for the firm, and then I started having a super-simple one or two T4 return once I was teaching. Took me maybe 5min to enter my info on Turbo-Tax and poof, done.
Today, the missus has one T4, I have one from some P/T work I did and my pension slip. A few T2202A's transferred from the kid and a year's worth of transit passes. RRSP and charitable slips, and we're done. Five minutes? Not any more. Now I seem to be negotiating a series of "click on the line and a form pops up with more sub forms about to pop up..." Not that bog of a deal, but I thought the not-too-long-ago T1 General worked pretty well. Now it seems more lines have an additional form attached to them, instead of simply entering a value. Annoying.