Hi Reggie,
Yes, these Squier 'Classic Vibe' series are the exception to the rule as far as modern Squiers go. The basic models are the usual budget starter guitars, but this range is definitely a step above, & well worth it. I hadn't noticed that you were in Oz, so naturally thought you had the same access to the kit we have over here in UK. My mate had a 'Classic Vibe' '60s model last year ( you know, the sunburst one with the Tortoiseshell scratchplate ) & it blew me away when I saw the quality for price. They were advertised as a compliment to the famous '80s Squier 'JV series' & having owned one of those in the past, I will say that they aren't too far behind it. I got my steel trem block via my mate, who had ordered some from a bloke he knows who actually makes them here in UK. Yes, Callaham of the US are the ultimate in Strat bridge/ trem replacements & have an excellent reputation for quality of materials & accuracy. They are rather expensive here in the UK, but I don't know how Oz prices compare. Just beware that you must obtain a Trem block or bridge unit that fits your Strat model. The far East dimensions are very slightly smaller than the usual USA dimensions, so may not fit & the screw threads are different too. I believe the far East may be more compatible with Mexico sizes. If you are upgrading the whole bridge unit it shouldn't be a problem, but if you are looking to just the trem block, be aware & investigate the sizes, threads etc. first. A Gotoh unit may be the way to Go ... To .... ha, ha ..... er, sorry .
Best Regards, Tony.