Dragon Eye in Texas

Hey guys, I've been away from the forum for a long time, mostly since I moved to work on Marshall Islands 4 years ago where we use bicycles only to get to work. Anyway, I come home a month a year and slowly but surely, my 4 head ALP has been false calling Polyscan starting with rear heads. Now its the front heads. So I need new ones. The question is there's the old $300 head that doesn't detect Dragon Eye and the $400 that does. So which one should I buy??? I live in Austin.

And if you...

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