glow shift gauges, any one tried them or heard anything?

[RabbitJockey]

saw these on ebay, looks like a good deal, obviously a cheaper gauge, but for that price, and with them all matching...  i'd like to buy the set then throw in a air craft spruce probe with this gauge and see what's good.  i read reviews online and looks like they are good business as far as service, but the quality of the product is what i am curious about, just wondering if any of you have tried these

http://cgi.ebay.com/ebaymotors/TINTED-7-COLOR-BOOST-EXHAUST-EGT-OIL-PRESSURE-GAUGE_W0QQcmdZViewItemQQcategoryZ43952QQihZ015QQitemZ250054930222QQrdZ1QQsspagenameZWDVW

[anarchyx34]

Friend of mine had one of those boost guages. It always read 2psi less than actual. You get what you pay for. I'd rather stick with a known brand like VDO, Autometer, etc.

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[RabbitJockey]

thanks for the suggestions, you have saved me grief, i have a vdo gauge and it's a vision series which is supposed to be nice and it always read low. at 0 psi it read likes -1 or 2