Tibor Gulfstream QC
Tibor Pacific QC
The year before we had fished The Gulfstream and tested it against an approximately 300lb Blue Marlin. The reel did everything it could and held up to the fish so I knew it could handle anything I threw at it. The Gulfstream also seems more versatile. With a few different spools it could handle several different types of fishing and the weight and size would lend itself to blind casting better than the heavier and bulkier Pacific but would reeling in the smaller arbor become an issue after fighting many fish.
The Pacific is attractive due to the speed you can reel in your line when the fish changes direction and charges you. With the larger diameter you can retrieve line considerably quicker.
It was finally decided (after many agonizing hours of scouring the web for similar debates and finally just going with my initial thought) that The Pacific is the reel to get if you only want a reel to use for billfish. It would be pretty cool to have a reel for every species of fish you chase and there is no difference in price between the two. However, I decided that because I only get to chase billfish once a year and can't yet afford to have a reel per species, that the more versatile Gulfstream would be the way to go.
ps: There are other reels that I would love to own including Abel, and probably my top choice for billfish, the Mako and I am sure there are others in this class. Once you get to a certain level of quality, any of the top reels would be up to the challenge of tackling a billfish and a prize to own.