I'm after some advice

The UK dail up Internet options are almost changing daily, and I'm finding it hard to keep up.

I have a BT 'phone and am currently using the £9.99 a month option for unlimited off-peak ('til midnight) calls. 3 months ago it seemed like a wonderful deal, and I never get an engaged tone when I dial up, which is important to me.

Can anyone tell me their experiences of other ISP's in this latest shakeup and advise me as to whether I can get something better cheaper?

Thanks

Ed