Yes the 4K read speeds seem to be slightly worse than the EVO but the EVO has a second level cache. The Vector 150 can sustain those speeds over most of its capacity and at $99 it's a steal! I use that site all the time, it has decent comparisons based on real world setups."
The above was copy and pasted from the OCZ Drive link.
There seems to be a minimal difference between OCZ (I'm assuming you're talking about the other drive that's on slickdeals) and Samsung Evo except on the 4k random read portion.
You can probably use the website link above to compare crucial (if you're not talking about the other slickdeal) and EVO and see if the performance difference is worth the price difference.
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