Is resident Evil the essentials good?

well you see i like the Resedent evil series all of the games they are really kool. The best part is playing them in chrono order. Resident Evil the essentials says it includes resident evil 1-3 Veronica X and 4. The question is, is it the origional 1-3. The same storyline and the same gameplay or is it completley different? I'm deciding if i should buy Resident Evil The Essentials OR Just if it would be better to buy Resident Evil 1-3 on Playstation.