Hybrid for PC600

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Need some advise for stringing Prestige Classic.

What is the best hybrid for this racket?
I have 6 options to string it:
1. Nat Gut Mains @ 51, Poly (BB Original) Crosses @ 49
2. Poly (BB Original) Mains @ 49, Nat Gut Crosses @ 51
3. Nat Gut Mains @ 50, Syn Gut (Gosen) Crosses @ 50
4. Syn Gut (Gosen) Mains @ 50, Nat Gut Crosses @ 50
5. Nat Gut Mains @ 49, Multi Crosses @ 50
6. Multi Mains @ 49, Nat Gut Crosses @ 50

Currently I have it stringed with option#1. Wwanna try out some more...
Anyone could give some recommendation?