Phone upgrade hell

Looking to upgrade to N91 and trust me it is a real hell calling uping the service provider and haggling with them about the correct price and the monthly deal and duration etc.

And before calling them up I have to spend time doing all the price research into the phone deals etc,
Here is what Vodafone is charging me after being a customer for 2 years and not asking for an upgrade (yes I didnt ask for one - totaly stupid)
Phone Charge: 160£

Monthly Rental : 36£
Talk Minutes: 200 X network with stop the clock (Stop the Clock - Any calls made on the evening and weekend are capped at 3mins even if you make a single call that is > 3 min)
Texts : 100

I would also get 2 months free line rental which make the phone cost around 88£

After having a talk with them I decided not to go in for it, since I think when I did some research over the weekend I got a few other sites where I could get it much cheaper.
This site has a good comparison for N91 and the different deals avaliable.

http://audiovisual.kelkoo.co.uk/ctl/do/sort?pid=16415672&catId=100010713&tsSearchId=1150102370330&searchId=101020179_1150102370330_847407723&JServSessionIduk=xfv5cucc11.L37J2uk&field=linerental&sortcolumnid=line_rental


I think I am go in for Dial a phone
O2 -
Minutes: 200 X network anytime
Text: 100
Monthly Charge:30£
Phone Charge: 19£
And 6 months free 1/2 price line rental.
http://www.dialaphone.co.uk/kelkoo/offer/18O2XN250/

If i do switch to o2 I guess I have to get the pac code from Vodaphone and cancle my contract and move my phone number over and do all the other mess.