In theory? Yes. Actual noticable difference? I very much doubt it... Save your money, get the cheaper one, and put what you've saved towards some aftermarket speakers.
Just as a side note, I put a Pioneer DEH-3300UB in my MK1 Clio with the orginal (13 year old) speakers, and the difference was amazing... Have a shop around for a good bargin though, I got that unit for about 50-60 quid plus a fiver shipping...
Obviously though, if you go buy a cheapo chinese branded Head Unit, you'll probably not notice a difference at all? Buy cheap, buy twice!