Intel stock heat sink opinions?

Intel stock cooler is fine for a i5-4590.
The only reason for an aftermarket cooler might be noise.
Under a stress test, the small 92mm fan spins up and is a bit loud.
Under normal conditions it is inaudible.

Here are my stock instructions for mounting the cooler:
----------------how to mount the stock Intel cooler--------------

The stock Intel cooler can be tricky to install.
A poor installation will result in higher cpu temperatures.
If properly mounted, you should expect temperatures at idle to be 10-15c. over ambient.

To mount the Intel stock cooler properly, place the motherboard on top of the foam or cardboard backing that was packed with the motherboard.
The stock cooler will come with paste pre applied, it looks like three grey strips.
The 4 push pins should come in the proper position for installation, that is with the pins rotated in the opposite direction of the arrow,(clockwise)
and pulled up as far as they can go.
Take the time to play with the pushpin mechanism until you know how they work.

Orient the 4 pins so that they are exactly over the motherboard holes.
If one is out of place, you will damage the pins which are delicate.
Push down on a DIAGONAL pair of pins at the same time. Then the other pair.

When you push down on the top black pins, it expands the white plastic pins to fix the cooler in place.

If you do them one at a time, you will not get the cooler on straight.
Lastly, look at the back of the motherboard to verify that all 4 pins are equally through the motherboard, and that the cooler is on firmly.
This last step must be done, which is why the motherboard should be out of the case to do the job. Or you need a case with a opening that lets you see the pins.
It is possible to mount the cooler with the motherboard mounted in the case, but you can then never be certain that the push pins are inserted properly
unless you can verify that the pins are through the motherboard and locked.

If you should need to remove the cooler, turn the pins counter clockwise to unlock them.
You will need to clean off the old paste and reapply new if you ever take the cooler off.
----------------------------------------------------------------------------------

And...what case will you have?
What graphics card?
Normally, the supplied fans are plenty.

Performance wise It's pretty good! However It's ugly to look at, in my opinion, in a windowed case. It's also louder. But these are compromises that can be lived with.

There's lots Of small cooler's that's are better then the stock one just lloj for ones designed sff (small form factor cases) as these take up little space

Zalman makes some low profile ones, not much taller than the Intel stock cooler, that are better:

http://www.zalman.co.kr/eng/product/Product_Read.php?Idx=469

Thats just one of them but that is an option in case you don't want to use the stock cooler.

But as I said, the stock cooler will be fine with no overclocking involved.

If you ever change your mind, you'd probably like the look of something like this:

CPU Cooler: CRYORIG C7 40.5 CFM CPU Cooler ($29.99 @ Newegg)
Total: $29.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-01-07 00:02 EST-0500