Replying to Chainsaws

Ok, my dad has an old OLD school Ruger Chainsaw. Like the type of chainsaw that in order to keep the bar oiled you have to keep pumping this button manually while using it. He has been complaining some about it lately constantly breaking down when he needs it and such And I am thinking about getting him one for Fathers Day (planning ahead). Now, when I use chainsaws at work I have the type of saw that I can rest the tip on the ground and the trigger and engine are up around chest level (I am 6'3"). We don't need something like that at the house but at the same time we need something bigger than a little one hand chainsaw like you see tree toppers use. Any suggestions varying from brand, size, or anything else?