While I haven't used any of the keyboards you mention I am using keyboards with Cherry brown and Cherry red switches, and can also vouch for the red Cherries.
Are you looking for a similar non split but angled design? Then I guess the TrulyErgonomic might be an option. Or if you'd consider something more extreme I'm a big fan of the Kinesis Advantage (see sig). Both are available with red switches, but are quite expensive. You can find extensive opinions on either in the Truly Ergonomic Unboxing thread.
Update: I never heard about the
uTron before. Interesting idea with the reverse stagger on the left hand, though I don't see any point in staggering when you can angle the halves whichever way you like. A quick search found
Where can i buy uTron keyboard?. 52'500 YEN is roughly $684, ouch.