Hey Pat and welcome,
I only use drives from OWC:
https://www.macsales.com/
You might consider putting in an SSD:
http://eshop.macsales.com/shop/SSD/OWC
I've put SSDs from OWC in:
a 2006 iMac
Late 2009 15" MBP
Late 2009 MacBook Unibody - Client's daughter had stopped using it because it was so slow. Now she worries that she's on it all the time.
5 more for clients that I forgot the particulars
My personal early 2011 MBP 13" i5
Here's some videos:
Startup
http://tinyurl.com/ooe6sac
Photoshop CS 6 open job:
http://tinyurl.com/nsussol
I bumped the RAM to 8 GB and bought the smallest practical SSD, the 120 GB (budget minded).
Here's some benchmarks from OWC:
http://eshop.macsales.com/Reviews/Framework.cfm?page=/Benchmarks/CS6BenchmarkPag e-MacBookPro13.html
You'll notice that the increase in RAM doesn't make much of a difference from 4 GB to 8 GB. The addition of an SSD makes a huge difference however.
Now I can't stand to work on a machine with a conventional drive, they feel broken to me now that I've been spoiled with an SSD.