I have to disagree w/Jake's assessment of the Spectrum. I've had one since March and, although it is not a daily carry piece, it is one that I carry on frequent airline trips because of its non-threatening appearance.
Mine has zero blade play even w/tension set so that it can be opened w/wrist flip. Although I can adjust the tension w/o use of the tool, it has not worked loose on its own. I also ran it through the AT Barr liner lock tests w/o any problems.
I guess it's another case of YMMV. Now that it's been out for a while, I'd be interested to hear other owners' opinions.
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Cheers,
--+Brian+--
I may be goin' to hell in a bucket, Babe, but at least I'm enjoyin' the ride.