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$28. seems solid, has the smartest of audios. ordered one to see.
The mach1 version had a hard black glue that was very difficult to remove, and I ripped the u.fl connector off trying to remove the sma extension. RDQ gave me credit after I notified them and they are aware of the difficulty in removing the glue. They said directions to remove the glue should have been stapled to the package, but it wasn't. Be very careful if the connector is glued and you need to remove it.