mine will hit my deeper targets in my test garden better than the F70. Also, you have the Stat mode, for Cache hunting.
I'm kinda partial to the Je mode as well, which makes the F75 a fine nugget shooter, and a demon in dry sand for small gold.
The PF mode is a keeper too. All in all, while I really like the F70, the F75 is a more versatile and well rounded machine, with many more options to fine tune your machine to specific circumstances.
If I could make ONE change to it however (the F75), it would be to add a SL mode for added depth in areas where you can use it. So far I havent found a site here where SL mode has an advantage, mostly due to the fact MY sites are 99% iron nail infested, and you lose a lot of separation and "finesse" in SL. One of these days when I find the time, I'll hit a few of my big colonial fields with the 70 in SL mode to really give it a fair shake.
I think BOTH machines have strengths, and there is a place for both of them in my stable. Problem is................... I'm probably gonna have to buy another f70, as the one I have is technically Lindas. (But fortunately, she kinda likes the F5, so I usually dont have to fight with here to use the F70).