I personally found the EF 24-105/4L to be a very good standard lens on the 5D ... however,
it will not fit into your budget ... and it also exposes quite an amount of
barrel-distortion at 24mm (which might be unacceptable to you for the price the 24-105L costs).
Besides the lenses already named (Tamron 28-75/2.8, Sigma 24-70/2.8 and Canon 28-105/3.5-4.5)
I see the "EF 28-135/3.5-5.6 IS USM" and the "EF 24-85/3.5-4.5 USM"
Just my 2cts ... Rainer
it will not fit into your budget ... and it also exposes quite an amount of
barrel-distortion at 24mm (which might be unacceptable to you for the price the 24-105L costs).
Besides the lenses already named (Tamron 28-75/2.8, Sigma 24-70/2.8 and Canon 28-105/3.5-4.5)
I see the "EF 28-135/3.5-5.6 IS USM" and the "EF 24-85/3.5-4.5 USM"
Just my 2cts ... Rainer