We moved from SE London/Kent to Brisbane at the end of 2013, and it's only just now (5 months later) that we're really starting to feel settled.
In terms of likes/loathes, it's such a personal thing. I loathe the fact that our freezer grows mould on the outside during monsoonal rain! There are a million bugs/ants/Mosquitos/fruit flies here at the moment. I love the fact that there are plenty of new experiences, and it is possible to go for a really active lifestyle (though my DH and I were into that in the UK as well, so it's not like a personality transplant!)
But it really does depend a lot on where you move to, time of year, what you'll be doing etc. For every person moaning about the heat or humidity in summer, there's someone loving the mid-20s days throughout winter.
It's expensive. No getting around that - food, some clothes, travel etc are pretty pricey. We budget carefully (from when we were surviving on one income) and after our rent/childcare expenses, spent around $300/week, to cover food, petrol, car insurance and entertainment. So not cheap, but doable.
It's been tough for me to find work in a fairly specialised industry, but part of that may have also been the timing (everything seemed to shut down for Christmas!) and now I've found a good role it seems there are opportunities opening up everywhere... but on the other hand my husband literally walked into a job within a few days.
We were worried about meeting new people, but in the end decided to rent a townhouse in a complex with facilities (pool etc) that has meant we've met quite a few neighbours, many of whom are in similar relocation situations (ie next door have moved here from South Australia, the people two doors down are from Malaysia... Plenty of people looking to meet others if you look for it) We also joined various Meetup groups, parents groups and sports teams, which has been great in widening the social circle.
I found a nursery place for DS (10mo) after quite a bit of calling around... He does 4 days a week at one nursery, and 1 at another, but hoping that a F/T place will come through. It doesn't seem to bother him though, just twice as many new toys to play with.
I'd say that to make a move work, you have to be realistic. Like Whatasook said, there are people who expect 360 days sunshine but not too hot, or to live like a king on a pauper's wage. But generally, if you do your homework before you go, I think the adjustment period is a lot easier. It took us about 5 months, and a couple of fairly stressful periods, but my DH and I are probably happier than ever now. Good luck to you with your contemplations!