Difficult to answer that one because the type of fishing you intend to do dictates the type of rod and in turn the casting weight you'd use.
For example if beachcasting you'd use a rod capable of casting upto 8 ounces,but for trout fishing a rod casting 1 ounce might seem a bit overpowered.
The rod I settled on will cast 1 ounce plus bait or a 1 ounce lure or float.
As an all round rod my suggestion would be 8-9 feet with a through action (this means it bends from the tip to the butt,unlike a tip or fast action which bends mainly in the centre to the tip of the rod) casting 1 ounce .This rod can be used for spinning,float fishing and light legering,it should be capable of landing any fish you encounter as long as you play it and not just bully the fish in.
When it comes to which manufacturer I wouldn't hesitate to recommend shimano rods( I have at least a dozen and most of them are multi-section,a few of them come with an extra piece which replaces the section next to the butt and is a foot shorter therby reducing the length of the rod by a foot but not affecting the action or casting weight(two rods for the price of one).
When I go bushy and fishing I take a selection of spinners,hooks and lures.I also take some lead weights and lead shot this gives me the option of using spinners that are too light for the rod to cast by adding lead until i reach the casting weight of the rod.I can always make a spinner heavy enough to make the rod work but if the spinner or lure is already to heavy then you cant use it properly,Although I have no worries about using a 1 ounce rod to lob out a 3 ounce weight as long a sit's done gently and I don't expect to cast more than about 20 feet.
What I have done in the past to get a really heavy bait out deep is to set up the rod as normal and hold it in one hand with the bail arm on the reel open and then with my other hand throw the bait out,I have done this with a whole mackeral as a pike bait.
Any other questions ,don't hesitate to ask.
I'll have a rummage in the shed tomorrow and see what I've got up there for you ,bound to be somethingin there.