We are in Charlotte, North Carolina. Not for everyone but it suits us. Good economy, good schools, low taxes, outdoors lifestyle (if that's your thing). Here, we live completely debt free and it's a lovely feeling. When I got here, I took a pay drop. Within six months I was promoted and I now earn the same as in Australia. I just get to keep more of it than in Australia. Getting promoted was validation for us that, if you're prepared to hustle and work for it, America is the land of opportunity still.
In terms of moving, we just winged it. We brought no furniture with us. Just suitcases with valuables and that was it. We've had friends who have moved furniture across but, in hindsight, they wished they hadn't. One said her couch smelled damp for months. Unless it's an incredible family heirloom that you can't part with with, either sell your stuff or put it in storage. Besides, American furniture is pretty nice. You'll enjoy the shopping
Credit history is everything. We build our credit score before we came across with HSBC, but that only works if you are a Premier Customer. Lots of DVers have opened AMEX's while still in Oz, as AMEX will recognize your Australian credit history. One thing we did was get a secured credit card when we got here. $5000 on each card and we used those cards for everything. Between HSBC and the secured cards, we built up our score quickly and, within six months, we're close to an 800 score.
In terms of buying a car, I wouldn't buy online unless it was new. Plus, you can really haggle these guys down in price. We traded in a car for more than what we bought it for earlier in the year. Buying online removes the ability to look them in the eye and negotiate.
We had no real help settling in. We did it ourselves. Now, with quite a few Aussies moving to NC, my husband and I are acting like a welcoming committee. Helping people getting settled in and helping them through the first few weeks of being in the US (which spins your mind out, no matter how prepared you are). There are lots of Aussies in NYC and quite a few DVers who I am sure would be more than happy to help you guys settle.