OP,the FS is a range of rods which include the Quiver & Specialist so I would suggest that you think about what you are fishing for,where and how.
The temptation is always to look for the more powerful rod but if you primarily fish Stills for Bream,Carp Tench etc then a 1.5 or 1.75 Specialist will cover most of your needs.If you want to fish for Barbel then a 1.75 should be enough but maybe go higher if fishing a big river like the Trent with 4oz weights.
I can't comment on the FS range's performance as never owned one but I have a pair of the original Korum Neoteric Twin Tip's (rare now) for Barbel fishing and they have been excellent rods.
As for reels then unless you are punching the feeder across the world then a 4500 should be enough and a reel of this size will give you more versatility if you want to use it on other rods.
i do target mostly tench and carp but id like to start barbel and chub fishing next summer to switch it up from my usual, i have a 12 ft 2.2lb neoteric fs but not used it as of yet and i was just intrested in what folk had to say about them as a rod overall, i did originally plan to get the drennan acolytes but the cork seemed to be made of cheap quality from videos i had watched on yt and for the cost of the rod itself that put me off, which then took me to look at korum's brand and try something new as ive always used drennan daiwa or shimano brands so im kinda new to korum and was intrested in the quality of there gear, i mean the rod looks stunning and expensive looking for what i paid and im very happy with it im just one for performance and this had me wondering how its performed and should i change to something else, but thanks for your comments guys it was intresting to read and i will look check forums for rod reviews and get other feedback