I think my issue is about stiffness of the tip in flowing water. The two rods I have are pretty lightweight, even for commercials, though I’ve had decent weights and double figure individual fish on both of them.
I tend to fish pretty light generally and would probably only invest in an Avon if I was targeting big fish or a big feeder rod if I was going to use it regularly.
The milo is a superb rod, as that review says.
Thanks for the replies so far, what strength tip would you choose for a river like those mentioned above?
You need more than one, really. Tips between 1.5 and 2.5 oz will probably cover what you've described. On the Dane, or some other small rivers, if I'm after chub and a 2oz tip isn't strong enough - I conclude the pace or flow where I've cast is wrong for chub and move/cast to where it does work! If a 2oz tip won't hold up, the fish are probably somewhere more comfortable. On the Dee you might fish with your rod down on a low or normal river, or up high, to take a bit of pressure off the tip, if it's running a bit harder. The tip material makes a difference; a glass tip will be a bit softer, and slower in the way it behaves, better for slow/low rivers; a carbon tip will be stiffer and work better in a flow.
If you have some tips in that range, just try them out and see how they work. I'm not trying to put you off getting the right gear, but you'll find that you can make tips work by adjusting where you cast, how high you position the rod, how much you tighten up or make a bow....... You can't really sit at home and say "this strength tip will do for these rivers"; there are a lot of variables.