The only thing with those models is that they are not current models so you might find them a challenge to get hold of. Go to your local phone shop that is willing to show you a phone working. Santos is on the right wavelength as far as manufacturer is concerned, as most Sony Ericcson phones allow you to change the font size.
If the shop gets stuffy about showing you a working phone without getting pushy don't bother with them. Go to an actual phone shop rather than woolies or especially argos as once you have opened the box argos will not take the phone back. At least in an actual phone shop they will allow you to see the phone working