<Are there inverters that can take me from 12vDC to 110/220vAC?>
Yes
<Any ideas?>
Yes, but we'd need an idea of how much power you realistically want to store and have available. If all you normally need is a few lights and a radio, keep it 12 volts.
<Ideally, I would like to power a 220V 30amp machine we have at the ranch but haven't yet been able to find an inverter or transformer that can do that for me.<p>
Currently, I use a gas generator for that machine.>
If you are considering getting a significant part of your power form the PV panels, forget the heavy draw machine. Even if you had 100% efficiency, the panels would have to pump juice into the batteries for more than 24 hours to run it for one hour. In practice, you only receive limited sunshine each day, and overall system efficiency will be closer to 50% than 100 after taking all the losses into account.
<Also, do you think I get better use of 48V batteries or 12V batteries? I have several 24 and 48 batteries and can always get more as the price to use is not too much different. I just have more of the 12V.>
What else do you want to do with the electricity? Your 270 watts of solar is adequate for only a few lights or so. If you want much more you might have to charge the batteries while the generator is going to run your big machine. There are modified square wave inverters which will do 2000 watts off 12 volts, but I think for anything bigger than a few hundred watts I would go to 24 volts or bigger.
If you are not a big power hog you can run stuff up to a smaller microwave on what you have with just the addition of an inverter.
Have fun,
Rex