I used to regularly troll military exchanges for saw bargains. That pool's dried up now. For me VMInnovations dot com has filled that void, at least for some segments. Saw dealers around here are vultures, but there are some good ones north of here.
Were I now to have to re-equip, and $ mattered, my plan would still focus on 40 and 60 cc. With maybe a cheapie or two for backup, my prime players would be Dolmars: PS-421 for ~$315 and PS-6100 for ~$550. Just because of performance, solid construction & price.
For firewooding, the 40 cc is an important part, as Chris says, and does much of the work cutting up the large amount of wood in the tops. That's where my little RedMax GZ4000 shines, and PP4218 earns its keep. With the 61 cc Dolmar, I often have to lean on it a bit, with OEM 20" bar, to keep it down in the power-band. That's why there's a 24" bar handy now. Very serious bucking saw. Might want some depth gauge lowering.