The Arcam all in one does seem good.
If you have £1500 have you considered secondhand... Can get a heck of a lot for that sort of money.
Cyrus 7 amp and cyrus 7 cdplayer with a new small sized DAB unit and maybe new speakers for that sort of price.
On hififorsale. £500 Cyrus 8 amp cyrus 7 cdplayers around £325-350 + £150 for new small sized DAB unit. Leaves £500ish for new speakers or for some seriously decent second hand ones Maybe second hand Monitor Audio GR10s with stands?
I don't know exactly what but you have some idea there of what you can get for your money.
Also I know this is really vain sounding but having a baby cyrus stack with a very similar dab tuner does look cuter than the Arcam solo
Steph
EDIT: Re speakers ... if you can place them further apart you will probably get better seperation but everything is a compromise. Try them see if you can cope or if you find your wasting the equipment if the speakers are so close together, and then decide it's up to you