OP:
You can probably drop -ANY- currently-sold SSD into the 2010 MBPro and it will work just fine.
I said "probably" because I'm -guessing- that just about all of them are "backward-compatible" with the slower bus in your MBPro.
Having said that, because ANY drive you buy is going to "max out" the bus in your MacBook, you don't have to buy "the fastest and most expensive". An "economy" drive will do fine.
I'd suggest a Crucial drive in the 240gb range.
You can find these for less than $100.
I would advise you to "prep and test" the drive BEFORE you install it.
Use a 2.5" USB3 external enclosure to do this.
Then, after you make the drive swap, the external enclosure can house your old drive, which you can keep around as a bootable backup.
I would also advise you to USE THE CORRECT TOOLS for the drive swap.
You'll need a Phillips #00 driver and a TORX T-6.
These can be found at hardware stores, Sears, Lowe's, Home Depot, and online.
Follow the instructions at ifixit.com.
Swapping the drive on a 2010 MBPro is as easy as it gets.
I did the same with mine and it breathed years of new life into it.