Gday Steve..... :)
Its probably not what you want to hear but all of the machines in your list, and many others not there, are more than able to consistently produce excellent espresso/milk texturing if you do your part, use great freshly roasted beans and a decent grinder such as the one you mention.
Best thing really is to get along to a reputable specialist retailer (such as our Site Sponsors) and setup a hands on demo with the machines that interest you. No other way really. Of course, Im biased ::) but I reckon the Diadema Junior Regal is a couple of steps above the other two for all sorts of reasons but that doesnt mean its the right machine for you. Heres my review of its bigger brother..... http://coffeesnobs.com.au/YaBB.pl?num=1163234999/27#25
Plenty of other great machines in that thread too.... 8-)