I'm thinking about buying a new guitar.
I need one with 24 frets and a double locking tremolo with a price range at or below $400
any suggestions?

The best one i found was the ibanez RG350DX
Second hand RG550 . I wouldn't buy new if you're on a budget.
Phrases Label
The Bohemes
The White Strat w/Dimebucker
Tokai Explorer Korina
Ibanez RG570 Purple Neon
Gibson Les Paul Deluxe Ebony
Fender Telecaster Apple Red
Dano '59 Burgundy
Ibanez Artcore AM-73
The 350DX is nice I own one and love it
Ibanez RG7321
Jackson Randy Rhoads V with Floyd Rose
Peavey Valveking 112
Digitech RP70 Guitar Processor
Quote by Lethal Dosage
The 350DX is nice I own one and love it

It is also much cooler looking then the 370. Put a monkey grip in it and you got yourself a JEM copy :P
My Gear:
Epiphone Les Paul Standard
Peavey Vypyr 30
DW Collector's 3 pc drums
Mapex Black panther snare
Sabian AAX/Zildjian K cymbals.