Can not say that I have 10,000 rounds through either my Hunter or Match. I do have 2,500 rounds of empty brass in my gun-room waiting for the next loading session. As long as the weapon is re-sprung appropriately it will last a lifetime. Load I have been working on is a 200gr HP either XTP or Nosler at about 1250fps out of the Hunter. Not exactly target level velocities. Confidence is high that these would destroy a G-20 in a few hundred rounds even though they do not show any pressure signs in either of my guns.
To get the equivalent of a Hunter you will need a complete new top end which will cost you more than the pistol itself plus replace most of your trigger mechanism. Even to bring it up to close to Match standards you are looking at a complete trigger job and a new barrel. In either case you still have the Glock Trigger that will be a lot better than the factory one, but is still a Glock trigger.
Realize that the decision is yours, but my recommendation is for a Hunter and by a Match or Limited top end later. In the end I think it is a better product with greater growth potential at a lower overall cost. Good luck on your choice.
10mmjunkie