I don't know how much better the AD-301 is than the internal one, since I installed it right away. But the Dual C5 looks awesome with it. It works flawlessly in the car. The GPS locks onto a signal very quickly. I don't regret the purchase.

Works great. Hooked it up and it started picking up a GPS signal pretty fast. Haven’t had any problems with it so far and the connection has been nice and steady. It’s small, simple, and does the job. Pretty much exactly what I was looking for.

Used on a device that GPS never worked with the GPS antenna it came with thought the device was broken put this on there just be cause it had the quick connector, and wow. It's now works! Now need to get another for my device I originally ordered it for. Highly Recommend.