I have been flying my 5 inch with ublox m8n gps and was able to successfully test pos hold, rth, missions.

Few months back it had a crash and after that i feel nav functions are not functioning well. One of Gps flashing green light never blinks. (Still get sats, but slow)

So I am planning to replace gps with beitian bn-880 from banggood

Is that a good choice?

The BN-880 has been a great M8N GPS for a long time and is quite reliable but at 28mm X 28mm and a whopping 10 grams, it's pretyy bulky.  The Matek is making quite a name for itself with the M8Q, it's quite a bit smaller and lighter that the BN-880.  

https://rotorgeeks.com/matek-gps-compass...search=gps

(29-May-2019, 01:54 PM)RENOV8R Wrote: The BN-880 has been a great M8N GPS for a long time and is quite reliable but at 28mm X 28mm and a whopping 10 grams, it's pretyy bulky.  The Matek is making quite a name for itself with the M8Q, it's quite a bit smaller and lighter that the BN-880.  

https://rotorgeeks.com/matek-gps-compass...search=gps

I found matek one costs triple the price of bn-880. Something I will have to think.
I found in rc groups so many praise bn-880
If i can get good (or same as my old m8n) performance from bn-880 i am good.

I have found the BN-880's to be disposable after crashes. My Matek has been on two aircraft and suffered several bad, broken frame like crashes and still keeps going.

For the price, the Beitan to be a a decent unit for the money...but it is not robust and now that I have been through 4 of them I could have spent a little extra and not been replacing them regularly.

I agree with Kaity

The 880 was a good price but i have had far too many failures. I built 2 quads over the winter and the 880 failed in both of them before I got through the flight test/setup (nothing wrong on my install to cause the failures). I had purchased 1 from BG and 1 from USA, so when the current working 880 expires that will probably be the last one for me.
I have had good success with the 180's and 220's but i wanted one with a compass.