I own some big-ol saws. They are a homelite xp1000 (100cc), a homelite 990g (112cc gear drive), a husky 2100 (99cc), a pioneer RA (100cc), a pioneer 700d (107cc), a stihl 076 (111cc) and a stihl 090 (137cc) plus various slightly smaller saws 80-95cc. I also have a few larger newer saws jonsered 910, stihl 066. I definately have to say there is a big difference in the way the oldies sound, but supprisingly not as much difference in cutting time as you might think. Those older saws pull a big chain and hardly ever bog down, so if the weight is not too much of an issue for a given individual then the oldies can be a joy to cut with. The breakdown in power from least to greatest as far as I can tell goes something like this...
Pioneer RA steady and a strong puller with a loowww rumble to it.
Homie xp 1000 a good reliable cutter with a 20" bar pulls pretty good, not an unusual sound but still loud.(tempermental starter)
Pioneer 700d feels as if it runs about the same in the wood as it does out of it, I run a 36" bar on this with a .404 full comp chain and it rarly bogs or drops rpm's.
Husky 2100 for a higher rpm saw (relative to these others) it still pulls very hard, cuts fast withe 28" bar and 3/8 full chisel chain that I use on it, still loud but more akin to what a more modern saw might sound like.
Stihl 076 doesn't have the chain speed of the husky but will still edge it out head to head, at least with the two examples I own. This saw pulls veerrryyy hard with the 32" bar and .404 full chisel chain. Also it is very reliable and has a great bass sound to it