<font color="blue">Does anybody have good results with either technique or any ideas. I'm into quick and easy... </font>
Well Rancherron, unfortunately "quick & easy" and "mesquite termination" don't go hand-in-hand. After clearing several acres of mesquite myself, I can tell you this: You are in for a LOT of work. /forums/images/graemlins/frown.gif
About a year ago, I had posted this same question.
Here's a link to it - hopefully it will provide you with some useful information. Additionally,
Brush Busters article talks about mesquite eradication as well, along with
this link which talks about other methods comonly used.
If you want the "quickest and easiest" (Notice I didn't say it was necessarily "quick and easy" - just that it was the better of the methods) I suggest a dozer with a root rake - preferably a sizeable one (e.g. I found that 14K # was light for removing my mesquites and it required a sizeable amount of time/effort to use it.)
You got to get the roots or your work will be for naught.
As for the devices that grub the mesquite stump by lifting it with the 3-pt - Although I don't have one, I did attempt to use this technique with a subsoiler. Before the subsoiler broke /forums/images/graemlins/frown.gif, I could literally squat my back end of the tractor by lifting the 3-pt with it essentially "hooked" to the stump - in other words, my belief based on my experience is that unless it is a really small mesquite, you're wasting your money as you will need a LOT of tractor to pull them up whole with such grubbing devices.
I know that this is probably not the info you wanted to hear, but it's what I've learned over the past year after clearing the infernal flora from my place.
Good luck.