There's some bumf here that's worth going through.
If you're not contemplating downgrading then you're looking at another Dynamque or upwards. On the latest ones, that gives you
The Dynamique is probably similar spec to your current one, though you'll have a few new toys such as auto lights and (I think) cruise control and ESP. Along with the Dynamique Navigation and GT, you'll get yourself the 17" alloys and a spoiler as standard.
Buying new, I think the Initiale gives the best value for money if you like your toys, but along with the Privelege models, it's not outwardly 'dressed up' from the lower spec models in the group.
The GT gives you a choice of two exclusive engines (205bhp petrol and 175bhp diesel.) If you can find one where the original owner Spec'd the optional Bluetooth/MP3/DVD navigation system, then you get all of the toys of the Initiale to boot. If you want something quick that's fully loaded with toys and you find one of these, bite the seller's hand off.
If you're thinking of going diesel, then aim for the new 2.0dCi and not the aging 1.9dCi. The 1.9's not a bad donk (I have it in mine) but the 2.0 will put a bigger smile on your face.