I've no experience with the 110 but I had a TD5 Disco and the engine was strong and once I had a plug-in chip fitted it was surprising how much extra power there is available without all the messing around with intercoolers, fuelling etc on the 300 TDi.
One thing I found on the Disco was that, before the chip was fitted, it was a nightmare at junctions because you can't just plant your right foot. It waits for a while, has a cup of tea, reads the paper, before it does anything and that can be a bit disconcerting in heavy traffic!!