Hi Marty you are listing *very diff machines in your list
super autos can be hard to get "great" coffee out of. they can compromise quality for ease of use........ many here would not think of getting one but they do suit a purpose.
the Fresca and 6910 are similar but remember both are still "appliances" they could (will) produce better coffee than the AUTO but need a bit more effort.... Its not hard to do just needs a bit of practice. There life span may be shorter than a Silvia or other "commercial based"
if you go the 6910 yes you need a grinder, before xmas the 6910 came with a "free" grinder (sunbeam0480) and is a good package. You might be able to negotiate a grinder at a good pirce
the Silvia is a better built machine and can last for many years (with the right care) and will produce very good coffee with the same effort as the 6910 & Fresca..
the lelit might also be a very good choice have *a look at the link below
Not sure where good fresh coffee is in Perth is but for a good cup check out Epic in west Perth *Loved it when I worked on Kings Park rd :).
what type of coffee and how many do you expect to make daily / weekly / on weekends as it will help us give "ideas" on the right machine choices for you?
How much effort do you want to put in?