A number of years ago I heard the company sold and the quality went down somewhat. I got mine in 2001, before the company sale, and it worked great. I used it for one job and never again. We cut 1/4-1/2 acre holes in a tanoak forest in December, yarded out the firewood logs in January, and replanted with Douglas fir in February. I'd sell mine, but I don't do online transactions, so you would have to take a trip or get resourceful on how to make the payment.
And yeah, a 372 is sufficient. I used my 371. If I remember correctly, they recommend 4-4+ cubic inch powerheads.