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Taking into account basic parameters of 741 and 324 one can say that the 1/4 of 324 is better opamp than the older 741 ..
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I wouldn't use "the best" description, as there are hundreds of new generation opamps which are beyond comparison with both of opamps under consideration ..
However, in certain applications 741 will be still as good as any other "super-duper" contemporary opamp ..
Here is an interesting publication on this issue: "Op amps take the next step" : **broken link removed**
These two opamps are similar in performance.
However, the L324's common mode input range is from 0V to Vcc-1.5V. Having an opamp that can work with voltages close to ground potential is a clear advantage, since you do not need a negative supply voltage.