I have a York 3 ton with gas furnace package unit that generally has been fairly unreliable. Am thinking about just changing it out for one that has a 2 stage burner and maybe variable speed blower. Does anybody know of a site that rates package units by any chance. Have thought about Goodman since they seem to be popular around here then also American Standard and Armstrong. Any recs on what I should get and what isn't really a needed feature?