I've had scads of 3 cube saws-026, Shinny 488, Dolmar 5100S, Solo 651...., most all were woods ported. my fav was the 346NE, ported by Jasha Reynolds, the No Cal faller . Kick ass saw till the crank broke. Mitch Weber (mweba on AS and sawhogz) has had it for damn near six months now. Horrible communicative skills. Says it's finally fixed, didn't charge much, but damn it , send it back. He did port a 550 for me, and, while I do like it, I'm not sure it's as fast as that 346 was.
I was going to have Terry Landrum port a 562 for me, but after having a track hoe trash my 660, (my fault for forgetting where I set it) I'm going to have him port a new 390 for me. Fixed the 660, with aftermarket crap parts.......still needs a bit of help from Andy Nobbs to get workable.... Cutting down three trees for his neighbors tomorrow, after finishing another storm tree... had a gaff shank break today....