My planned purchase is the Jet 1100 Vortex...for about the same money ultimately spent on the HF and less work (if you're thinking of adding the additional goodies).
If you just want to go with the basic unit and not modify it with the filter cartridge, separator, impeller, etc... the cheapest unit is the HF. Others will need to chime in to attest to its efficacy. Make sure you compare CFM's and particle filtering (microns) if you're still shopping. Determine your required air flow and make sure whatever you purchase will satisfy that (throw some in for bends and runs). Particle filtering is key...good choice on putting it outside...the HF bag, as I understand it, blows quite a bit of small particles back into the room. Unless you also purchase a cartridge filter...
The important thing is to have good dust collection...any system is better than no system.
Just another opinion...you've heard the expression :grin: