Welcome to Coffee Snobs Dutchie.
Its not that simple.
You said you are "now getting taste for fresh coffee".
A $700 budget is not going to get you a grinder with some of those machines listed.
Without a decent grinder youll be wasting your money on any machine.
I have experience with the Sunbeam so am able to tell you it can make a decent coffee and do reasonable job on the milk too.
Youll need to matching grinder at a minimum.
Im confused though.
Firstly, the Delonghi Magnifica ESAM3500 is a fully automatic and despite Delonghi sponsoring my footy team, fully automatics are not recommended in general.
Also, my research indicates a new price of $1700.
The Silvia is also over your stated budget.
Please confirm your budget before we proceed any further.