Steeda Sports are a great all around choice. Steeda Comp's are a better choice if you have or intend on running a blower/turbo. (because of the extra weight up front). That's the quick answer. There are a ton of questions/answers needed to make a detailed choice on suspension parts. Do a search and read a bunch about this topic. There is a lot of good information posted as this is a frequently asked question on this forum.
Considering you found a coilover kit for 1k, I'd go with the watts link (in regards to your question). Now with that said, IMO you're better off spending the money on some good shocks/struts, springs and cc plates.
H&R race springs have a decent rate for hard driving duty, but are a little low for some...
Don't get the Steeda or Fays Watts link in any case.
The coil overs will make a much larger difference in handling than the Watts link. $1000 for coil overs is a little too cheap unless you find some good used ones.
My White Line Watts is supposed to be here on Friday and my coils are waiting in the garage!