Here are some of my all-time favourite combos. Of course there are a lot more than these, but these are the ones I can remember right now.
PLASTIC
Concept: Smash Attack
AR: Triple Wing
WD: Wide Defense
SG: Neo-Right
SG Core: Heavy Metal Core
BB: SG Metal Flat 2
Concept: Zombie
AR: Twin Horn (Takara ver.)
WD: Wide Survivor
SG: Neo Left
SG Core: Bearing Core
SP: Cross Survivor/Defense Ring (varies on how I'm feeling!)
BB: Customize Grip Base
Concept: Balance
AR: Tiger Defenser/War Lion (depending on the situation)
WD: 10-Balance
SG: Right (Bearing Version)
SG Shaft: Bearing Base
BB: Defense Grip Base 2
Concept: Balance
AR: Wing Cross (Hasbro Bistool mold)
WD: 10-Balance
BB: Semi-Flat
Concept: Compact
AR: Tiger Defenser
WD: 10-Heavy
SG: Neo-Right
SG Core: Heavy Metal Core
BB: SG Semi-Flat
Concept: Upper Attack
AR: Upper Dragoon
WD: 10-Heavy
BB: Grip Base
Concept: Compact
AR: Wing Cross
WD: 10-Heavy
BB: Metal Ball Base
HMS
Concept: Compact
AR: Metal Ape
WD: Circle Heavy
RC: Metal Change Core
Concept: Upper Attack
AR: Samurai Upper
WD: CWD Defense Ring
RC: Metal Weight Grip Flat Core
Concept: Defense + Force Smash
AR: Metal Ape
RC: Rubber Weight Core
Concept: Survival
AR: Advance Survivor
WD: Circle Wide
RC: Bearing Core
Concept: Upper Attack + Force Smash
AR: Advance Attacker
WD: CWD Eternal Survivor
RC: Auto Change Core
Concept: Defense
AR: Advance Attacker
WD: CWD Eternal Survivor
RC: Bearing Core 2
Concept: Smash Attack
AR: Samurai Upper
WD: CWD Free Crusher
RC: Battle Change Core
PLASTIC
Concept: Smash Attack
AR: Triple Wing
WD: Wide Defense
SG: Neo-Right
SG Core: Heavy Metal Core
BB: SG Metal Flat 2
Concept: Zombie
AR: Twin Horn (Takara ver.)
WD: Wide Survivor
SG: Neo Left
SG Core: Bearing Core
SP: Cross Survivor/Defense Ring (varies on how I'm feeling!)
BB: Customize Grip Base
Concept: Balance
AR: Tiger Defenser/War Lion (depending on the situation)
WD: 10-Balance
SG: Right (Bearing Version)
SG Shaft: Bearing Base
BB: Defense Grip Base 2
Concept: Balance
AR: Wing Cross (Hasbro Bistool mold)
WD: 10-Balance
BB: Semi-Flat
Concept: Compact
AR: Tiger Defenser
WD: 10-Heavy
SG: Neo-Right
SG Core: Heavy Metal Core
BB: SG Semi-Flat
Concept: Upper Attack
AR: Upper Dragoon
WD: 10-Heavy
BB: Grip Base
Concept: Compact
AR: Wing Cross
WD: 10-Heavy
BB: Metal Ball Base
HMS
Concept: Compact
AR: Metal Ape
WD: Circle Heavy
RC: Metal Change Core
Concept: Upper Attack
AR: Samurai Upper
WD: CWD Defense Ring
RC: Metal Weight Grip Flat Core
Concept: Defense + Force Smash
AR: Metal Ape
RC: Rubber Weight Core
Concept: Survival
AR: Advance Survivor
WD: Circle Wide
RC: Bearing Core
Concept: Upper Attack + Force Smash
AR: Advance Attacker
WD: CWD Eternal Survivor
RC: Auto Change Core
Concept: Defense
AR: Advance Attacker
WD: CWD Eternal Survivor
RC: Bearing Core 2
Concept: Smash Attack
AR: Samurai Upper
WD: CWD Free Crusher
RC: Battle Change Core