I like PopG have both and maybe if I didn't have my Web site for all to see I could get by with the Tempest BUT they are no where near the same for me. You get what you pay for as they say. IMOBean counting a Davis Vantage Pro2 Plus at $1375 is required to have the features of the $350 Tempest. The Davis includes an LCD display the Tempest lacks, but who doesn't have an old tablet laying around?
Spiders found my old AcuRite and it got to the point I was disassembling it every month to clean out cobwebs which locked up the fan and rain measuring teeter-totter. The Tempest has no moving parts to have this isssue.