Hi Kiwi returning to Wellington after 3 years - a whole lot of stuff seems to have changed while I was away!

I am basically going to be on the move for a few months as we evict tenants/ sell houses etc so I am really not sure what to do for broadband. Broadband is totally essential to me as I run a business from home.

I don't wish to be tied up with a landline  phone line again which I lose everytime I leave the country or even suburb so I don't need a plan that includes a phone number - we already have a skype-in phone number.

Any recommendations for a phone which will pick up on the wireless single so I don't have to have the laptop on to answer the phone?

I need something that gives me the adsl2+ speeds I get in Perth 24MPS - but this seems to be very, very fast in NZ terms - like I see telestraclear advertising 2mps - that's hardly broadband speed is it? The speed I have here is OK - its not great but usable - so long as I don't want to watch videos online (which Idont very often) - I am just talking about normal surfing and website development stuff (not image heavy) - maybe I am missing something but 2mps seems very,very slow ?

So it seems that I need - in NZ terms a very,very fast speed - 24MPS but only a modest data limit 10GB/month is what I am currently using

Or is it more complex than the advertised speeds?

Can I bring my own modem back to NZ (dont laugh you used to have to have a telepermitted modem)! I have a 2 year old Dynalink DL604T which is an adsl2+  wireless modem/router which works just fine -  technically I assume it will just plug in in NZ so long as buy a NZ phone line connector.

Also any recommendations for  a mobile datastick type solution. I see telecom advertising one - hugely expensive though at $30 for only 500 MB (which I would use in 2 days without trying hard)

Sorry I am a little confused -  I was leaning heavily towards telestraclear - but their speeds seem way too slow - other options for Wellington?