If anything I would be more concerned about the new Superleggerra stuff being too light. I know this is WeightWeenies and all, but in my experience, beyond a certain point you don't get light weight without a compromise somewhere else. I'd say bar choice is about a personal a decision as saddles when it comes to shape, but I really do not like a bar/stem combo that seems at all flexy. I've never heard anything about pre 2015 Deda stuff being too fragile... except maybe those comments were limited to the pre 2015 Superleggera line of components. I've never used them. As for shapes, I had the Deda Presa (RHM) carbon bar a long time ago, but I didn't like the RHM shape so much and the small ovalized portion on the tops really required an angle at one spot only otherwise the edge seemed to jam into my palms more than I like. And I couldn't stand the internal cable routing on those bars, pretty much requiring you to insert the cables and housing into the levers unattached to the bars, then push everything onto the bars all simultaneously. I prefer simple round tops allowing a wide range of angle adjustments. I also prefer and nice longish flat drop where you put your hands, and I also like the ramp from the tops of the bars to the hoods. In other words, the Deda Zero 100 SHALLOW is about as classic as it gets these days, and it is what I prefer. It's an alloy bar, and I run it with either the Deda Zero 100 stem (-8 degree) or the Pro Vibe stem (-10 degree). I found the 3T carbon bars to be on the flexy side, and have run the LTD and TEAM versions of the Rotundo combined with the previous versions of the ARX TEAM stems. I do like some of the FSA bar shapes... as they fit Campy levers nicely, and although the drops area isn't completely flat, it's long enough and not too far from being flat that I like them ok as well. But when choosing bars, you really need to also consider the levers you're going to use and how they match up to them, as there are combinations that don't work at all imo but you still see people combining them, then wondering why they either can't reach the levers from the drops, or can't put them high enough on the bars. If you really like levers that kind of sit high on a tight radius curved bar, then Shimano levers work better than Campy. But on Classic shaped bars I think Campy really fits nicely, and especially nice on Deda stuff. Also, the choice of bars shouldn't be overlooked when you're sizing your fit etc., as a classic shape bar with a ramp might place the levers and where you put your hands a good 1.5-2cm lower than the tops of the bars at the stem for instance. So don't go cutting the steertube until you're pretty much set on which bars and set up you want to use in the long term etc.
Since u have experience in Shallow vs RHM shape, how u compare them in term of reach? Which of them have shorter reach in real life?
I like Shallow shape since it have bigger drop, but donot know how is it in term of reach. Somehow i feel that i can tolerate bigger drop in drops position, but not bigger reach in hood position.
And which shape allow higher levers positioning with smoth transition to the hood and without bumb on the start of the hood? (im not sure if it's possible at all to be bump on shallow shape) (i hate Bumb on start of the hood when u install levers higher on some bars)