I never bother programming above about 250 when doing 3D carving work. All the changes in direction rarely allow the machine to get much above that.
If I am doing "mechanical" work like cutting out pockets and such I use those high feedrates. Normally with a fairly new HSS cutter I will cut .25 deep at the high speeds in pine. I back off a bit on the depth of cut in hardwoods. If I am using a larger cutter like .5 I will cut the .25 depth no problem in hardwood.
The first time I cut at feeds like this it scared the heck out of me! I went back to cutting at a slower feed, but then I started going faster again and am now used to it. When I see someone cutting a mechanical piece on YouTube at 100-200 IPM with a good machine I think WHY?
Before I "retired" I worked at one of the largest cnc laser manufacturers. We are talking 5 X 10 machines cruising along at 3200 IPM rapids, and nice cutting at 2400 in thin material. To see something that big going that fast is amazing.
I was talking with Ger21 one day and he was telling me that the routers where he works leave a rooster tail about 8 feet long when they are cutting. Incredible.
And then there was the machine about 40 years ago cutting aluminum aircraft parts. 50K rpm spindle, depth of cut 3.00 inches, .5 endmill taking a half diameter pass at 1100 IPM. Downright scarey, I swore the tool was going to snap right off. Never happened.