Watch out there are two Pure Power (APS in Canada and AVPS in Taiwan). Some have reported having bad experiences with the Canadian company here. I'd recommend doing a search for details.
Looks like the newer model has more continuos watts and potentially longer output when power fails:
PP 2000+: 1800 watts continuous / 2340 short term (2 min.)
PP 2000: 1400 Watts Continuous, 2000 Watts Short Duration
The PP website does not do a good job of explaining PP 2000+ difference IMO. Unclear if 2000+ maintains full wattage output alone or requires power packs.
I believe that Walter of Underwood is working with PurePower AVPS in Taiwan currently, not the Canadian company. I tend to trust Walter's judgments in things like this.
See the other recent PurePower thread for details of issues with the Canadian company. User Glory also had a thread about his problems with PurePower in Canada, though it seems that the thread may have been deleted.
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