It is like comparing Yugo to Toyota. No comparison.
There was a long thread on the Badger TC910 last year.
The Badger TC910 is typical made-in-China compressor. It runs a little bit hot and reasonably noisy. You can find more detail about it at Don Wheeler's website. You can probably buy a similar one for $120-130 elsewhere. Actually, I got a brand new one for $40 plus shipping (Yes, $40, no typo) from Northern Tools in 2011.
The Sparmax TC-2000 is a very well made unit from Taiwan. It runs cool and quiet. Most importantly, it has a well established reliability record. It is well worth spending the extra for it if you are in modeling for the long haul.