I check the 3 site today, and noticed that the LG u8110 mobile has been released! I was told about this a couple of weeks ago, and how it was a very good phone and much, much better than the other phones on 3, including the NEC e616, which has had many software problems, or so I'm told.
It seems to have everything I need: SMS, Colour display, Bluetooth, SyncML, speakerphone. As far as I'm aware, it will work with Bluetooth headsets, so I could use the Sony Ericsson one I currently have. It's about the same size as my SE Z600, but my only issue is the aerial, which I've always disliked.
I'm very, very tempted to get one, partially because of the phone, but also because the 3 phone plans are quite cheap compared to everyone else. I could go on a $55/month plan and select the "30% off Talk" bonus, and end up paying 16c/30 seconds + 25c flagfall, which is pretty good. A couple of days ago, I switched from my Vodafone 60+ plan to a Vodafone Red Sim Monthly Plan, with a minimum of $50 per month. I end up paying 15c/30 seconds, with 20c flagfall and 20c SMS. I can also call any other Vodafone mobile for 20c (with no flagfall) for a maximum of 200 minutes per month. Lucy is on Red Sim Prepaid, so it's extremely handy. Because of that, I don't think I'll switch to 3 right now, but it's very, very tempting…
There’s a good NEC E616 article at the Mobile Phone Directory