Just in time to protect the second round of iPad 2 buyers from their first screen scratches -- and yes, we already have a pretty nasty scratch on one of our test iPad 2s -- United SGP has arrived on the scene with new Steinheil-series screen film protectors, the second ones we've received for testing. Ultra Crystal ($22) is a completely clear version, and Ultra Fine ($25, shown in these photos) is an anti-glare version with fingerprint resistance,…
