for cost, a split mech keyboard is gonna be double the price of your average 105 keyboard, is it worth it? well considering almost EVERYONE here who buys a mech board soon has a collection of 3 or more within a month of their first purchase, it would be bad to get one that is also split/ergo if that's what you're used to.
i can only recommend the kinesis, but i's REALLY out there and there is a learning curve, I can see this is also where the TE fills in, though i cannot recommend it or endorse it (not having one, and not trusting the company) it is an option.
also if you think you like blues, kinesis don't got one, so you're gonna have to mod it, and that would be pretty involved, not only do you have to desolder every switch but you have to "hammer" out each switch from the plate as well (it's semi glued in place), it can be done, i've done it to my kinesis and made the keys ergo/white modded.
while TE does have blue as an option.
look for stores that carry the razer blackwidow, as that's probably the most mainstream mech keyboard (it's cherry blue)