That T435 year model no longer made newer models have chip board of some kind that's why I purchase it,far as 350 done very well for me cutting 16" trees truck loads of fire wood.
Take little time visit your local dealers offer chainsaws hold them up shoulder high to get feel for 15- 20...
Friend purchase self sharpener for his chain saw like the on offer on youtube said it was okay if your cutting small stuff or dry clean wood,other than that you still have file the chain rakers and keep angle and pitch true.
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What size of wood you are cutting?
I have light duty chain saw comfortable to use for trimming up to 6"...T435.