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Sh4dowSmith I/O and Giro Manifest. Giro Manifest probably has the best, easiest interchangable lens system of any goggles. Smith I/O are a lot more difficult to change the lens, but they have a clip in the back of the strap so you don't have to pull them over a visor, helmet cam, etc.
If you are concerned about lens, any dark lens is fine for bright days. For flat light and when it's snowing, Smith Sensor Mirror and Oakley HI (High Intensity) Yellow are the two best options. At night, you'll be fine with the Sensor Mirror or HI Yellow as well, but if you really want the perfect option, clear is ideal for night. Not really worth the money though unless you do a lot of night skiing, just use your flat light lens for night.