I've got a few, but i'm probably most satisfied with my Mayflash stick.
Here's an Amazon link
I picked it up at a shop for under $30 used, and it was fairly easy to convert to Sanwa parts (a bit of grinding and soldering, but it took less than an hour). It doesn't have the weight or aesthetic appeal of a
Hori Real Arcade Pro but it
allegedly works with a PS2 system (not the backwards compatible PS3) and its a lot cheaper to mod it than buy a HRAP.
Mine didn't work on a PS2 slim (the only time I tried the PS2 functionality), it was used though.
You may want to check out a tighter joystick if you're into Shmups, some people tend to favor them more. Some of the Seimitsu ones may be more up your alley than the Sanwa's.
Also, I can't recommend ZenErik enough for used sticks. I bought three from him a short while back. Great prices and great items, you can't go wrong!