I guess I'll throw in my 2 cents. I really don't think the Topre switches are the pot of gold they are made out to be sometimes. I wouldn't throw money at a Realforce, personally. I have the HHKB Pro 2, and the killer feature for me is the layout. The switches are nice, but not great, and if you moved away from rubber domes, you might be disappointed at first as Topres keep the general force curve of rubber domes (they are a lot smoother, more tactile, and don't need to be bottomed out, however). Even after having mine for several weeks, I am not really sold that Topres are the GOAT switch. I would definitely look at the Filco with Cherry browns or the Cherry G80-3000 with browns from Datacal.com. Either one of those will be a joy to knock out 350-400 pages with.
I am not a programmer, but I like the HHKB layout, too.