Redmax blowers have always worked great for me.10-Year Update:
(9-year update)
(5-year update)
(3-year update)
(2-year update)
(1-year update)
(initial purchase October 2014)
(RedMax EBZ8500RH / Husqvarna 580 differences)
The RedMax EBZ8500RH (also sold as a Husqvarna 580) two-stroke backpack blower (recommended here as the most powerful backpack blower at the time) still starts and runs like new. It runs best with a 50:1 mix on Premium ethanol-free fuel, too much oil and it loses power. The one big (needed) change is cleaning and lubing all of the tube connections with SIL-Glyde--it's now easy to put together and take apart the tube sections.
The STIHL KombiSystem got some blades (1, 2) and is in over-all great shape with just the one rusted muffler bolt. I replaced some worn plastic inserts that hold the driveline in place; the STIHL dealer had the best price I could find. Otherwise I haven't replaced anything on it because it's still running well.
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BTW the carbs are tunable and will run well on any oil ratio you chose once tuned properly. The LS in particular is very lean on these from the factory.