I recently adopted this method which is the reverse of how I've done it for years. Historically my first pass was to delete all of the images with obvious technical flaws, clipped wings, etc. Then continue to narrow down and zero in on the best of the best. I'd spend hours over multiple days. Now I do the reverse. I go through and pick those that are the best content first. I examine those in detail and if there are no issues with them the rest of that burst get deleted. Move on. Good enough is good enough. No need to compare two nearly identical images at 100 percent view to decide if one might be just a tad sharper than the other.
Also like others in this thread it didn't take me long to back off of 20 fps for other than special circumstances. It has its uses but not for everything.
I always looked for best/most interesting shots first. It made adjusting to more fps easier for me.
Now, my process goes in the following order
1. Isolate series of of shots (eg one burst, one event, etc)
2. Skim thumbnails for unique/interesting poses for wildlife with good light or ones I personally like, or for airshows shots where the interesting thing happened (planes crossing, vapor cloud off the wings, etc)
3. Select interesting shots, verify basic sharpness (don't need to go to 100%, even at 50% it's easy to tell for me if it's worth processing at all).
4. Go to next event/subject/etc, repeat 1-3 until done culling
5. Import selected images
6. Now I'll look a little closer, comparing images if I have multiple from a set/subject if I want to keep them all
7. Once I've whittled down to the best ones, send through dxo pure raw (I use capture 1 for processing otherwise).
8. Import back into c1, finish processing.