Teddyfone safe phone for kids

Hello

I know this has been discussed on here nd that a lot of people think it totaly unecessary but as mine had never arrived I thought I would give them a call.

Apparantly the delay has been caused by Vodafone not holding up there end of the deal (so the advice line rep said)

The deal now is that you can either choose the phone on the

T-mobile 1 year contract at £5 a month with £20 cashback in 4th month.

No free calls and tarif at
21.5p oer min for cross network calls
8.5p per min for landline calls
12p per text message to ping them(look for them)

or

O2 2 year contract
they say no line rental but there must be minimum of £5.00 of calls ech month i.e. if you make £2.00 of calls they still take £5.00.

No free calls and tarif at
30p per min cross network calls
12p per min landline calls
14p per text

Now I know there are some people that think this an awful idea for young children but I would like to know the opinions of people on the choice between the 2 tarifs.