A couple reasons. Whenever I do a divebomb a string would break or it'd go out of tune. Also another question I lost my tremolo arm I think that's what it's called but anyway where could I buy another bar?
Any guitar store...
'89 RG-550
'92 Talman
'08 Les Paul Studio
Parkwood PW320M
Schecter Stiletto Custom 4

Fender Blues Junior
Kingston Halfstack
Blackheart Little Giant
Acoustic B20

And way too many effects.
Okay, since some of the "advice" so far has been less than stellar, allow me to add my two cents.

1: That Floyd you linked to should be a direct swap, most FRs are the same size, except for the Ibanez Edge series, and the Jackson Low Profile ones.

2: When the problem happens with divebombing, I'd guess it's either a burr in your bridge saddle, or you didn't have the locking nut properly secured down.

3: GuitarFetish sells extra trem arms for pretty cheap. They also sell some relatively nice LFRs. If you wanted to go all-out, you could always buy a Gotoh, Ping, Schaller, or Original Floyd Rose unit. Those are the absolute best brands.
R.I.P. Les Paul, 1915-2009

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