Peter ,they could all be the same, after all they are all used for ledgering!

So having decided what you want to do,and assuming it's only ledgering.

You need something to cover those angles,it depends on the size of fish and the weights your casting.

The only real thing to concern yourself with is weight of the feeder and the size of them. On a powerful river you might need a 3oz or even a 4oz tip and a powerful rod to cast a large 3oz feeder full of bait. The tip would need to be carbon so that it registers drop back bites.

Alternatively even on a commercial where the fish are a lot larger you may be able to get away with a light rod if you are just using a bomb and loosefeeding with a catapult. However, sometimes even for bream and skimmers you can use too light a tip as you may wish to creat a rig that creates a 'bolt' effect. To do this you can always wind the tip round if bites aren't developing. By the way, you can land quite large carp on soft rodswithout too much power in them if the peg isn't too snaggy.

Hi Peter

I know it's tricky, but have you considered what you want to spend?  My advice would be to look at what most manufacturers call "medium" feeder rods - probably casting up to about 2.5oz easily.