With the limited information, I'd either look at the MS400, or MS462. Not sure what the husky equivalents are, but I'm sure they are good saws as well. I'd give your son the 044 to run so you can have the lighter, and stronger saw.
FWIW, once you get to 60cc, I would stick to pro saws simply because of the weight. 12lbs to 13 lbs isn't bad, but if you're carrying around that much weight, the saw should have the hp to get the work done fast. If you're not really concerned about how fast the saw cuts, there's not much need to have a powerhead that weights more than 10 to 11 lbs.
FWIW, once you get to 60cc, I would stick to pro saws simply because of the weight. 12lbs to 13 lbs isn't bad, but if you're carrying around that much weight, the saw should have the hp to get the work done fast. If you're not really concerned about how fast the saw cuts, there's not much need to have a powerhead that weights more than 10 to 11 lbs.