Yes jontee you will most likley regret getting rid of your XM.
I gave mine a good wash today she deserves it.a J redg 2.1 td hatch grey mettalic 158k on the clock.
I paid £400 for her off ebay and its the best £400 I have ever spent.
The car is an absolute belter,she has just towed our caravan down to south wales and back (Lanc's) and done loads of touring down there.
I said to my wife what a brilliant drive the car gives(and not to pull a face when she needs a few hundred notes spending on her) and how comfortable she is on long journeys,we love the car it's the best ever.
I have had the car for around 8 months now and she's proven to be reliable,comfortable and very economical for the size she is.
She will be even more economical when I get her drinking the vegoil but thats another story.
Your renault will have to be a goodun to replace your XM.
Gary