OK, time to contribute some actual facts here. Before I do that, I would offer to the O.P. that buying the 361 to improve upon his running 029 Super is a waste of money. The 361 may be SLIGHTLY smoother, and make a tad more power. Neither one is anywhere near knocking on the door of a decent 70cc saw. For a substantial increase he needs to step into the 70cc or 80cc ring. Really no homeowner saws in that league, so not alot to discuss there (though I am sure the guys here will offer discussion anyway....)
Now for the facts. If you have not run all three saws well broken in for at least several tanks, please don't bother arguing with me. These pics have been posted before. First up is a picture of some cylinders. the one on the left is the 029 Super, and the next one is the MS-290. The 029Super jug is like a Rolex, and the 290 is like a Timex. Both work fine, but the 029 Super is a work of art. Notice how the top fin is cast in the area of the spark plug. Now notice the outside area of the transfer, and how the Super jug is "fingered" and of a little smaller volume (I suspect higher velocity inside.) The third from the left is the 310 jug, and 390 all the way over. Having run all of the saws here, the 310 and 029 Super run almost identical in performance, despite the smaller displacement of the Super. Muffler modding either makes about the same difference as well.
Next up we have some closer pics. Notice the quality of the Super jug compared to the 290 one. The mold marks on the halves of the jug are much smaller, and cleaner. The intake and exhaust flanges are much nicer. These cylinders may come into my shop from time to time, but they are almost always held in the "private stash." Wish a had a few more right now.
My point here is to keep you guys from lumping the 029 Super and 290 in the same category. The 029 Super was probably worthy of wearing the Super name plate. Those saws are very similar, but the Super is a notch above. I'm looking for some pics of tree service 290's right now to show you guys just how un-reliable those things are.....:bang: