That's a no brainer. Stihl. You will never notice the difference in HP and Stihl is a better saw anyway.
.....MS 170 Chain Saw - Occasional Use Chain Saw | STIHL USA Mobile
......HUSQVARNA 240 - ChainsawsI think they are both supposed to be pretty good saws. Might want to think about the selling dealer, is one closer or is one better to work with. Never know when you might need service.
Don't think you can go wrong with either one.
JMT's
Stihl, or Echo sorry I know Echo wasnt one of the options but I have had pretty good service with them, and their warranty is better 5 years parts, and labor.