Radiators: what are the most efficient

Hi there,
I have looked through previous threads but couldn't find anything on radiators other than the use of TRVs. We are updating our central heating system and also replumbing the house. The current piping is gunbarrel and has to go. We will be installing a combi condensing gas boiler but were wondering should we be looking at any particular type of radiator to increase efficiency. We definitely don't like the long single radiators, they take up so much wall space and are bound to be blocked by furniture in some rooms. The house is a 3 bed mid terrace and approx 1300 sq feet.
Many thanks for any suggestions
Camlink.

We did this last year - and you will be amzed how compact the new single radiators are. In most cases half the size of the original rads. - with far higher heat output.
Just something we were surprised by..