I've had both the X-70 & the 705's, for some reason, I just like the 70 better. To me, the 70 has the same performance as the 705. I really have 2 of them headed my way, a mint SN 00349 and a later SN 05866. Both will get the straight rod set up and one will always have the 10.5DD coil on it. I just picked up the Coiltek Digger and a 15" MF coil. So, now I'm set for Relic season to begin in the fall. I sold the 705 and now I only have the X-70 for my top detectors. I'll say it again, I've had just about ALL of the top VLF machines out there, except the 3030 and I still have more confidence and faith in the Xterra series machines, have used them since 2005, in fact, I found my 1st silver dollar with the X-50 with the stock MF coil and 85% of the relics in my collection were found with the 70/705's. You just can't beat the smooth operation and depth & separation of the Xterra's!!!!!!
My Review from another site.....
Xterra 70/705
May 22, 2010
First off, let me say that I have tried about every high end TID machine out there in the last 2 years.
Now, let me give my honest review of the Xterra 70/705. 1st off for relic hunting, make sure that you get the 10.5 7.5kHz coil for open field hunting, the stock 9" concentric coil just does not cut it.
The next choice would be the 6"dd 18.75 coil for the real trashy spots around homesteads and in yards.
The Xterra is a really simple platform to set up and use. Just noise cancel when ever you get to a new site. I always use all metal, 2 tones, sens as high as you can and auto tracking. The new 705 has a auto track offset that lets you set the GB either + or- but I have rarely used this feature.
Balance and weight with the 10.5 coil can be bothersome to some, but can be fixed with a $20 Whites straight rod part instead of the "S" middle rod. The straight rod completely changes the balance to make the 10.5 coil lighter.
I have had 4, yes 4 Xterra 70's. I traded them off for other machines that I thought might beat the performance of the Xterra. I returned to the Xterra 705 and decided that for the price and performance, it just cant be beat. I have no problem digging targets at 12" with the Xterra and the 10.5 coil combo.
It is such smoother running machine at high gain than any other that I've tried.
Overall Rating 5 stars!
Morelic55 from Nixa,MO USA

My Review from another site.....
Xterra 70/705
May 22, 2010
First off, let me say that I have tried about every high end TID machine out there in the last 2 years.
Now, let me give my honest review of the Xterra 70/705. 1st off for relic hunting, make sure that you get the 10.5 7.5kHz coil for open field hunting, the stock 9" concentric coil just does not cut it.
The next choice would be the 6"dd 18.75 coil for the real trashy spots around homesteads and in yards.
The Xterra is a really simple platform to set up and use. Just noise cancel when ever you get to a new site. I always use all metal, 2 tones, sens as high as you can and auto tracking. The new 705 has a auto track offset that lets you set the GB either + or- but I have rarely used this feature.
Balance and weight with the 10.5 coil can be bothersome to some, but can be fixed with a $20 Whites straight rod part instead of the "S" middle rod. The straight rod completely changes the balance to make the 10.5 coil lighter.
I have had 4, yes 4 Xterra 70's. I traded them off for other machines that I thought might beat the performance of the Xterra. I returned to the Xterra 705 and decided that for the price and performance, it just cant be beat. I have no problem digging targets at 12" with the Xterra and the 10.5 coil combo.
It is such smoother running machine at high gain than any other that I've tried.
Overall Rating 5 stars!
Morelic55 from Nixa,MO USA