Which one is gooding? The difference between these two? Planning to change my laptop hard disk. Need some suggestion ;)

mestilah SSD!

SSD > SSHD > HDD

SSD is much faster than a 7200rpm HDD.
When you are talking about SSD, it is a different league.

I've used both drives before.
And I can tell you that the 7200rpm drive feels slightly faster than the SSHD during loading.
However this may be my own subjective opinion.
Once loaded the SSHD feels slightly more responsive especially if you're loading applications that are commonly used.
The commonly used files will be stored in the solid state cache portion for faster reading.
SSHD also generates less heat and is quieter than the 7200rpm drive because it spins at a slower rate.
If you're always on the go using the SSHD means you can eke out a bit more battery life per charge.

go with conventional drives 5400 rpm, 7200 rpm or 10k rpm or go entirely with ssd.

Do not go hybrid like 1TB with 24GB ssd...it is a bunch of crap! Half way working on something, the hdd starts spinning and caching and you cannot do anything to stop it until the hdd decides that it lets you do something, by then it is over.

Do not run games on it period!!

Use the INTEL RST tech, buy your own SSD + HHD, then can use the SSD to cache any HDD you like. Later can also use the SSD as a standalone drive...

Being running such a system for a bout 2 years now.

In dilemma between wd scorpio black 500 gb or seagate sshd 500gb

I use kinngston ssd... no regret

On the theory side, SSD capability to retain data will wear out but the conventional HD will last forever. Remember when the SSD first came out? They were struggling to set algorithm on how to make SSD use all the memory locations randomly not just frequent on erased location. This because the locations that are frequently used will wear out and cannot retain data or become unreliable.

yup, the hdd section of sshd dont go until 7200rpm.

to be honest, hard disk also got wear off life span

I think buy a conventional HDD to store whatever important like backup. SSD used to run os and apps for faster loading time.

I just had my first SSD failure. Totally cannot detect. Luckily few days earlier when it starting to shut down on its own on numerous occasions, I backed up some 5000 AutoCAD drawings. Otherwise I'll be left scratching my head. Still losses a lot documents though.

get Seagate 2TB or 1tb i use it on my office PC, to run OS and program seem to be good and responsive. good luck

SSD over PCI-X.hnnngrhhh.

Mostly is mechanical wear, true. However, the good thing is the failure is rarely sudden unlike electronic failure. This is why USB drive is never meant for back-up. Until now I still believe the SSD chance of failure is still within 2~3 years. It is fast to be your OS platform, but for data storage or backup I will still go for old fashion HDD.