I've got a Fender Strat with the American 2-point Synchronised tremolo. Or so I believe. It is this guitar:

So the tuning is pretty stable with that thing, I only get problems when I start divebombing and stuff like that. The problem is that the goddamn trem arm is all over the place and feels like it's going to fall out any second. I was also hoping that a different tremolo would increase the guitar's sustain, because it's not bad by now, but could be better I believe.

I was looking at this trem:

Some of the most influential luthiers in my country recommend and regularly use it, so I thought I'd look at it. My question:
Will it fit in my Strat? I don't want to make irreversible modifications to my guitar (because of re-sale value), so milling is out of the question.

Alternatively, this seems like a good trem, too:

I don't know anything about it though and I'd like to know what the big difference is between it and the Schaller 2000.

What other trems are there that would be a good choice?
I figure Wilkinsons are worth a look, but will those go in without drilling/milling?
Screw in the bar so it stops moving, and generally trems don't have the best sustain because of little contact with the body.
Enjoi <--- Friend me
Quote by Scowmoo
Otter, you're my new god.
Only screw it till it doesnt hang straight down. You'll be fine
Fender Thinline Telecaster Deluxe

1983 Aria Pro II XX Deluxe Flying V

2007 S101 EGU34

1963 Kay Vanguard

1964 Kay Vanguard

AXL Badwater SRO

Hondo Strat

1974 Acoustic(brand) 134 4x10 combo

Epiphone Valve Jr.
Quote by TheQuailman
Is it possible to damage the trem/arm if I screw it in too deeply?

Well, once it gets tight, it won't break unless you pull a hulk.
Enjoi <--- Friend me
Quote by Scowmoo
Otter, you're my new god.
So, are you happy to tighten the arm, or are you still looking to get a new Trem, that doesn't have the issues of your current Trem (or any other) and will do what you want it to do and pretty much, slot straight in?