Stop using coke.
That said, I don't like Bundy Rum either but the special master brewer's edition, Port Barrel Rum is my choice of drink now. Every time I buy a bottle I'm making my friend's collection a little more valuable.
Also stop using coke. I ain't into any cola at all but when you have to mix. try using pepsi max. Do a blind test if you must but you'll only prove me right.
If that fails, schweppes lemonade. (sprite is NOT a lemonade)
And if you weren't receiving a recommendation for Rum at all then definitely drink Bundaberg's Brewed Softdrinks. They are not the Rum people. Quiet separate.
I just want the Hat!