I think you're coming at this from the wrong angle.
Choice of a SINGLE rod for all types of fishing isn't a good way to get on. Different marks need different rods for the best results.
Apart from that, it also depends a lot on your personal physique. If you're not built like a gorilla you'll find it hard to get the best out of an SS if you want distance fishing. It's great for those with muscles the size of dustbins and those who are smaller who don't need to hit targets more than 80 to 100 yards offshore with 6 oz of lead and bait.
I had an SS and even though it was a lovely rod I felt left behind in the casting stakes. I don't do pendulum, nor do most anyway especially on piers and crowded locations, so getting a bend into it was damned hard. Try as I might I just couldn't do much better than 100m on the practice field. I'm pushing on in years and not heavily built so that's the problem.
I borrowed a C3LD to try out for 3 weeks. It was giving me a lot further distance. It was more easily loaded and when used in action the bite indication was better too. It's obviously a different rod, a true C curve and you know, you can feel the difference when you bend into it. I see no reason why it can't handle anything except for extreme conditions. I went ahead with the swap anyway as I was getting more satisfaction from using it. Not catching any more mind you.......
If you won't be doing real rocky coast fishing a lot then I'd say don't go with an SS anyway. Most decent rods that can throw a 6 oz lead can handle rougher conditions too. It's only when you snag up that you'll have to pull free anyway and most of us don't do it with the rod tip. We wrap it round our arm and go backwards to do the job.
Kelp dragging is one more task that a rod may well be put through. Same again there too. You don't winch the kelp in. You use the rod to do the job but it needn't be bend till it breaks. Short pump action is all you need.
I've just gone and bought a Sonik 14' 5oz NCT today. I'm hitting new distances with this already due to the fact I can bend it easier. I wouldn't use it on rough ground though as it's not designed for that. So there's no compromise with these things. You either want something to handle rough ground and limit yourself on casting distance or you go for a clean or light mixed beach rod.
Best thing to do is to get your hands on whatever rod you fancy and put it up against what you have and try it out. Most lads, well a good number of them would let you throw a weight or two with their rods if you ask them nicely. You're welcome to try my C3LD anyway. Or Sonik SK3 or even my new NCT though this isn't what you're really looking for.
There are so many options for rods for the clean-mixed fishing where the price is a lot easier on the pocket. Just because something has a "name" doesn't mean that something not renowned won't do the job. Take Leeda. They were almost budget stuff but the new M=Sport icons are really well rated. For the mixed/clean I'd got for the Leeda M-Sport Power. The Ultra is a lot stiffer more akin to the SS and match is really better suited to clean beach work. But that's just one name and there are lots more that arte worthy of consideration, I wouldn't be looking at spending more than mid to upper £100 though. The extra you'll get from an expensive rod, apart from better guides and fittings won't generally be noticed by someone who isn't a tournament caster.
I got a Sonik SK3 some time ago, fixed spool version and I love it to bits. I use it on Horden beach and from the harbour at Seaham and have no difficulty with it. I lose just as many leads at Seaham with this as I did with the SS.