Yes, many people who want to put in a lot of tinkering time can feel more comfortable with the V3i. Personally, I prefer 'simple,' and to me, the VX3 just feels simpler than the V3i.
I have let some people use it who have, or had, a V3i and in every case they have remarked that they felt the VX3 was simpler to adjust and enjoy afield.
Also, some people do not like Double-D coils, and I am on of the, so hey would prefer the VX3 that comes with the 950 rather than buy the more expensive V3i and then have to buy an optional coil.
I use my modified IDX Pro and Classic ID, 6000 Pro XL, and MXT Pro much more than I do my VX3, but then that is due to the site selection I have made so far this year. I do, however, enjoy grabbing the VX3 w/950 when I want to just go 'cruise' some more open park grass areas.
Just my feelings.
Monte