Can someone recommend me a good telephoto zoom lens?

Currently my choices are the "beercan" selling at  garage sale for 750 and the Sigma 70-300mm F4-5.6 APO DG Macro (should be lesser right?)
The cheaper the better 

Been a while since I played with my A200. Need new lens to make addicted to photography again 

sighnither : ppl got budget la , recommend that type of huge lens with huge price. LOL.

hey all, one question on white balance. after shooting many of photo, starting playing around with WB, i founf that picture output from AWB is not really like what my eye see in the view. feel the color more to yellow. but putting at 4500k, the skies is more blue and color look a bit "fantasy'... actually what is the WB suitaible when outside shooting ppl, landscape?

1.3x is exp oh!

Haha got people selling 1680CZ used at alphanatics for 2k. ):

haha... what lens ya got now ah? i know u got UWA la... others? eh sig, when i was there at the zoo kan... k la... besides having that urge to upgrade my body, i could see why nature enthusiasts, love them whiteys.... when i saw the elephants, i was very moved cos one of them appeared to look very sad, at that moment u could see it in the elephant's eyes... then i whipped out my 75300.. zoom2 tp x sampai...    kua kua kua....

G???

dun worry... i know u can dig that short of RM2000 sumwhere 
waiwah is calling u bro...

RM900?..yeah rite ...

camworld..another of Bintang Maju

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Added on June 16, 2009, 9:08 pmTest shots....

wonder:...wahh...so fast ...u got me there!

napi:..still can't beat u yet....perhap i should get a900 too?

sig:..that shots were not from "the lens" u saw last nite...

dark: kami selalu ada..ko jer yang selalu takde

albnok:...dun forget to holla me oso when F20AM arrive...and yes, i got the same lens as u...

and suprise?

albert

so u mean it's sharp or not sharp? I dunno, just lock in to my A700 aka the twin(heheheh sorry sig)..and test shot with different setting...based from my research (do I?)..the tammy should be sharp from 200-350 at F8 and those snaps were taken around 6.45-7.00 pm yesterday.

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Added on June 17, 2009, 1:21 am
nahhhh....just tipu ko jer..body pinjam je tuh....

caya tak?

dun think i can go... super duper busy at office~
juggling 2 project =     
hurray.... paycheque bila? 

itu la..if i'm going pun must be very last minute decision~~

never did buy a sony before..

ko dengar la ckp di din ni, kalau aku datang pun, aku bawak P&S jer

nope..its a G....

tekalah, aku nak gi lunchhhhh dlu

are u sure this is the 70-400 G??
looks like 500f8 mirror lens...