Based on what others say in terms of impressiveness, the paddles in the Giulia are more impressive than the manual in a Giulia. I have obviously not driven a manual Giulia but I have driven one with paddles and I thought it was very impressive how quickly it shifts. I don't think there will be a true resolution to this argument however as some people will always want a manual and others (such as myself) really don't care.Welcome.
As a lifelong manual car driver I'm about to find out whether the Giulia paddles are 'good enough' or whether this is one really expensive mistake. I would say that the couple of reviews I have seen where the Giulia manual is mentioned say that its not a nice positive manual box. But then being in the US its not like there is any possibility of finding out for myself. However its also fair to say that even for cars like BWM where you can still get manuals my local dealer insists you buy on faith because there are zero new models available to test drive with manual transmission they are all special orders.