I have both too, and find the 707 has a significantly leaner feel to it.
But a full feeling blade, as compared to the 705.
I love both, but EDC the 705 because of the Non-wearing-like G-10, as compared to the T6 AU on the 707.
I also removed the pocket clip on the 705 as i carry it in the bottom of my left front pocket, and it feels right at home there.(710 clipped to right front pocket)
Been thinking of doin the blade switch between them, putting the 707's blade into the 705 handle as others have done. Afterall i EDC Dress the 707, and opposite the 705. So having the fuller blade on the 705 would work out well i thinks.
Myself, i would snag a 705 if still availible where your at, thier discontinued i believe and are a worthy treasure in most pockets.
I am curious to see how other people's 707 that they EDC'd have held up in appearance and shape.
Easiest would be , Get both if you can afford them and enjoy having a dressy version and a work version.
Peace
WR