A (belated) warm welcome to vic0239 into the Firebrick-bonded A & A club!
As you may already know, I run a bonded set of three ADSL2 lines, extremely long. Speed : ~ 2.2 Mbps downstream each, so combined is ~6.6 Mbps, and the combined total upstream is ~0.7 Mbps at the moment (for some reason, it has dropped, it used to be > 1.0 Mbps until recently).
I'm on the "units tariff", I buy a varying number of usage units, but my usage isn't very high. I don't pay "line rental" to anyone else. I buy three copper lines for DSL from A & A, no voice service on them, and I also pay for three lots of BTW priority ("premium" what's it called?) at ~£10 pm per line. I also buy an AA 3G data SIM service for one of my devices plus I have to pay for traffic on that connection. My total bill is typically something like ~£150 per month, I think.
I run a Firebrick FB2700 which I love. I get a very nice IPv4 /26 block, so no NAT at all, and I have an IPv6 /48 of course. I have a single static IPv4 address for my 3G mobile connection (and no IPv6, yet). At some point I'm going to get round to testing VoIP, to see if I've got it set up right.