I've had a Befco 60" rear discharge finishing mower for about 7 years and never had a lick of trouble even though it has been beat up some. Keep it greased and it runs, can't ask for anything more. As far as cpmparative quality goes, I'd be a little more generous and put it in the medium/high category.
One of our ex-members on this board, Bob Skurka, had quite a few Befco implements as I remember and anyone who knew him, will know that he researched things to death before making a decision and plunking his money down. That would mean that he was satisfied about the quality and performance of the Befco brand.