Just my 2p worth.
I'd love to boost mine... but I probably won't.
I own an Audi S3 too, and although it's way way quicker. The Clio is more fun to drive and far more satisfying. Maybe some of this satisfaction will be lost with a boost conversion as you'll be constantly part throttle and on the brakes on a b road blast.
I've had a 20v turbo mk2 golf, impreza, vxr astra nurburgring, the s3, etc
The best car for sheer enjoyment is the least powerful pair of the lot, the mini Cooper s r53 and this Clio. The s2000 was extremely good to drive too.
So seems for me, NA is best for sheer driving involvement and satisfaction.
Boost for just breakneck speed and acceleration style of satisfaction.
Boost sounds epic though, love the wild rush sound etc.
To me though, less is more. Better balance...., as too much power causes traction issues and you can find you focus more on keeping it on the road than actually enjoying pushing on.... as in my mk2 golf. Horrific in the bends even with uprated suspension.