Proportions are pretty similar for all the models iirc, so one looking cack and another looking good is probably just down to the angles we've seen, or the colour of the paint etc. The BMW looks like the most finished car based on the new regs, a lot of the new Honda pics are still of test mules with a combination of parts.
Not fussed what they look like if this all goes to plan anyway, in theory the dirty air is much reduced now, which should make for more entertaining racing (although much of which is sadly offset by the shite tracks they've signed up in the past few years), Christian Klien has already said it's much easier to get in behind another car now. BMW are going to 'race' their cars at Jerez soon to see how big the changes really are.