I have the Last Straw and really like it (haven't tried the Blichmann gun). It produced a gold-medal winning bottled beer, so it definitely works. The Last Straw is not a counter pressure filler, but it bottles very cleanly. Just make sure you chill the bottles and set your keg psi to 3-5ish. My only gripe with it is that it comes with approximately 14 miles of tubing, which is easy to get tangled in.