Inverter:
You can run 110V extension cable that has a few outlets, from inverter to where you need it, just hang it on the wall. It is better to permanently wire inverter to 110V outlets, but you'll have to install a disconnect switch if your converter doesn't have one. And make sure that fridge doesn't get this 110V as people noted. Installer can do this for some extra pay.
300W Morningstar inverter for $245 - have heard nothing but good about it, it's silent. It is desirable to add a remote switch as inverter is normally mounted close to batteries, not inside the living space. Morningstar 300 has terminals for remote switch, don't remember if Xantrex does - probably does.
So here you go:
Morningstar 300W inverter $245,
100ft MC4 cable #10 $70
2*140W solar panels $288,
Controller Ecoworthy MPPT 20A $100.
Total $703 in parts. Better than initially quoted $1,600.
Everything but Eco is from Solar Blvd, and Eco ships for free from Eco website.
If you think you need more than 300W inverter, then get Xantrex. Only you can answer this, installers don't know the wattage of your Cpap machine and TV set.
Installer will add a couple of fuses or breakers, mounting brackets for solar panels and a short piece of a beefier cable from controller to battery and from inverter to battery. They already offered to include all that in their $400 labor as I understand, and if they also include MC4 cable, then you save another $70.
Why Ecoworthy MPPT for $100 and not Eco PWM for $48-56: because their PWM are flawed. One has plastic body (metal is preferable), and another one has no display. It's possible to add some V-A meter, but it sounds like the OP is not much into these things and need a turn-key solution.
Why not $20 gizmos from Ebay that BFL is so happy with :) : because $50 Eco PWM is better. $100 Eco MPPT is better yet, allowing series connection and therefore a thin MC4 cable.
