Mutt,
Are you using Flaps 20 Takeoffs?, interesting, any particular Field Length advantages. We're using Flaps 15 for standard operations, with, of course Flaps 5 for exceptional cases.
clifftop,
You have my total fascination in the data provided. Where on earth did it come from? Are you sure you're referring to B777? Particularly fascinating the Flaps Up at 210 KIAS, we don't recommend stalling practice on line ops.
Mutt, predictably, has provided the correct source of the Flap 15 data. Send me a PM jgracin if you'd like a few numbers to play with.
Regards,
Old Smokey