Ok, so the one I bought was a twin version of this, at a reasonable price of £39.99.
Having got 2 phones at a very nice price indeed, I wasn't too sure how good the quality would be. However, I was pleasantly surprised that the sound quality on this phone is perfect.
Address book - Caution! Do not use if you don't want any interference with your phone. I say this because I added my dad's mobile number to the address book, and whenever I select his number from the address book, the phone seems to cut off. Whilst I thought this may have been a temporary case, this was not the case, because the same thing happened again when I tried my mum's mobile. A feature that shouldn't be used.
LED Colour Screen: A fairly small screen, but has 7 preset backgrounds which you can choose from. I guess it gives the phone a more "mobile phone" feel, but I couldn't care less about it.
Caller ID: A very useful feature if you want to know who's calling you before you pick up the phone. That said, you do need to ask you phone provider to turn this feature on (which is usually free), otherwise it will not happen.
Answerphone: The answerphone is ok, except that when you've listened to the most recent message, you have to start all the way from the first message you've received in order to listen to your newest message again.
In terms of installation, it only took 5 minutes to set up both the phones, and charging time took approximately 8 hours.
The downfall is that, the rechargeable batteries on one of my phones has ran out, but not on the other phone for some reason. That said, when I replaced the batteries with new rechargeable ones, they didn't seem to recharge, and ran out on the first go. I don't know if this is a problem with the batteries or with the handset, and now I'm unsure whether to buy another phone (and this phone has only last a year), or try again with new rechargeable batteries.
Overall, I would have recommended it, but because one of my handsets no longer works only a year after purchase, I may advise you to proceed buying it with caution.