I was not aware of the pricing differences. I could now make a snarky comment like "Oh well, you get what you pay for" but actually that doesn't apply in this case because both Harris and Motorola mark up their radios to stupendous levels, contract price vs. actual manufacturing cost.
Nonetheless, I have yet to encounter a single case where any Harris (or other GE legacy branded radio) was all-around superior to the comparable Motorola products of the same vintage. Maybe the Harris (GE) radios had certain attributes in which they were better, but in general terms, my considered professional opinion as a radio tech servicing all brands, and as a user of them as well, is that Motorola makes the superior overall product. However, that being said, when Harris bought out Tyco, they started a product improvement program that seems to have worked quite well. Harris IS closing the techology gap and Motorola better figure that out FAST.
The P7300 I use on a daily basis is not even equal in quality and performance to any of my XTS5000s, and my M5300 has not shown itself to be as good a radio as an XTL5000. Motorola simply does it better. Not saying the Harris radios are bad. Actually they're very good. But if there's only one crown for one king, Motorola still wears it.