OK before anyone says anything, yes I have used the search and it has helped me some what.For under $300. I can get a new 511a delivered to my door. I noticed that Oregon has a new model the 511az. Is this one worth the extra $$? I want to upgrade from my current HF, and the Oregon appears to be the one or possibly the MAXX. Monies is tight. Does anyone have some spearenc (DW) on these? Ken