Hi Guys.

I am currently doing an Oem widescreen / Dvd retrofit Nav install into my M3. I have seen that a lot of people are using the cheap gps receivers from Ebay. Are these any good, or is the more expensive oem receiver a better option?

What makes a good receiver? There are all sorts of s/n info etc on the baseplate, but I don't know what it all means. I just want to get the best receiver possible.

Does anyone make an even better one than both these options thats worth paying extra for?

When I bought a Garmin, all the talk was about 'Sirf3' gps which locked onto a signal almost instantly.

Thanks for any help in advance.

Btw, Great forum