When I bought my cs310 many years ago, I loved the saw UNTIL,, I saw the 352. First off.. The anti vibe is better. THe 310 does not have that spring on the motor (remove the cover) like the 352. I'm not wealthy but I'm not poor either so money is a big deal but the difference in cost made the 352 a bargain. NOW, I really could get by with out buying another saw. HOWEVER,,, This afternoon my baby brother and I had a chat. Every year I give enough money to Charity to buy several new cs3510 saws. He said to me, "brother, you give money to others, why not give yourself a new saw, you know you can afford it and you deserve it". I had already thought, maybe, I'd pass on the new cs3510 but with 15% off it's not really much money. Heck, I'd spend that making a trip to Hot Springs. So, maybe, I will buy the new cs3510. I saw one on You tube and it looks good.. I think it comes with a 6 tooth spur sprocket. Of course I'd change that out to a Rim drive 7 tooth. Amazon sells one for the cs352 and it's dirt cheap. My cs352 has the 7 tooth rim drive kit and it really zooms. If you were to use my 352 you would see the difference. The 310 is ok for occasional use but, I still work my 352 pretty often. I wish you lived near. I'd show you how to build my sharpening Jig. Dad will do well to learn how to file a chain and dress a bar. Unless, well he just don't enjoy that kind of thing.. I do.. Here is another trick. I sharpen a lot of chains so to keep from mixing them up, I tie something on the sharp ones. I also spray my chains with Cooking Spray, I use Canola Oil in the green can from Walmart. It keeps the chains from rusting while hanging on a nail.. Good luck