Personally if I have to choose between 233 or 270,I'd run towards 233,especially the dot version
Had a chance to try pre owned version of both,270 felt taller and the movement (P2003) seems less reliable than P2002 inside 233
While I don't have any watch with 10 days movement,I have 2 watches with P2002 (though no 233),both watches perform nicely (both gave me 247-248 hrs of PR with COSC standard of accuracy almost throughout the span of the PR)
Domed crystal is the stuff that made these watches interesting,so I'd stay away from the new model with flatter crystal
After all,how can you say no to 1950 case with high domed sapphire??