Softbank iPhone 4 customer jumping ship to AU for the 5... Anyone else in the same boat?

If anyone's considering which carrier to go with, I suggest reading this first!

http://iphoneonau.blogspot.jp

Without spamming several paragraphs of hatred towards Softbank, I've summarised my reasoning for the switch below:

- Worst. Coverage. Ever. Seriously, want to know the excuse I got? "Well, we come from an Internet services background". No excuse in 2012.

- Laughable customer service (which is downright shocking considering Japan's extremely high standards). iPhone is the only reason this company is still alive...

- No upgrade plan / discount offer for the 5 - as along-term Softbank customer. Way to incentivise, guys!

- LTE coverage is minimal at best - and will be for years to come. If Softbank can't even handle 3G traffic, then what hope do they have for LTE coverage?! Softbank's stop-gap measure for poor coverage - WiFi stations at ever train station. Yeah, fantastic - maintain a connection for a whole 30 secs before you enter another train tunnel! WD guys!

So yeah, for those current iPhone owners & those of you wishing to buy the iPhone 5 - what's your game plan?

Feel free to share your experiences!