Depends on what you want achieve. If it's weight weenieism then there are better ways of shaving grams.
If it's just what can I spend money on to make it a better bike then for medium money a better fitting saddle and bars could be a nice place to start, assuming the saddle and bars that came with the bike are still on it, and they aren't a perfect fit.
Latex tubes and nicer tyres are always a good start, too.
I really wanna try the selle smp but the price is off putting!
I agree, brought the chinese copy which is remarkably identical to the actual one, good way of finding out if it's worth spending money on the actual SMP.
Depends on what you want achieve. If it's weight weenieism then there are better ways of shaving grams.
If it's just what can I spend money on to make it a better bike then for medium money a better fitting saddle and bars could be a nice place to start, assuming the saddle and bars that came with the bike are still on it, and they aren't a perfect fit.
Latex tubes and nicer tyres are always a good start, too.