I cannot find the DGA4130 for sale anywhere however I did find the DGA4132 in italy.
I bought my DGA4130 through Amazon Italy last November, but they no longer sell them.
I am trying to go through the thread but man what a read!
It's worth persevering, even though some of the earlier posts have been superseded!
1. I know understand they are both BCM63138 but is 4132 more recent and is that the "best" of the 2?
I think the 4132 is a later model with a SPF port, but otherwise the same.
2. Can the snr be tweaked?
3. Can I setup OpenVPN or any other VPN on the 4132? Not too cruicial.
3. Any other advise?
4. Any comparisons to the Zyxels are they appear top tier in terms of snyc speed
5. Are there other buying options (links please)
Sorry, I don't know the answer to any of these.
@shdf will probably be along soon. I believe he has both units, and is likely to be able to answer most of your queries.