Hey Jono
I just went through this very scenario myself! I have a Stella 20000 and it is a beautiful reel... But when you jig all day it gets heavy. I wanted a decent reel to put on a lighter jig reel. The problem is that it needs to have enough balls to stop a good fish when it jumps on.
I have been through plenty of cheap reels over the years but in the end it is a false economy as if you use a cheap a lot the gears will wear out (they can't generally handle heavy jigs anyway), the anti reverse will break etc. And more likely than not it will die when you are attached to a decent fish!
The new Saragosa 10k is worth looking at, or see if you can pick up one of the old models from somewhere. Not sure how hardy the Sustain is in terms of water getting inside of it. The Other ones to look at if you do want to go cheaper are the Daiwa Opus Bull 4500, The Seagate E and the Seagate Hyper are also options.
In the end i buckled and bought a new 8000 Stella but the old model. Awesome reel - personally i reckon the 1m per wind ish is perfect for spin reels...
Good luck with your decision. Just look at the Stella as an investment. Get it serviced and it will easily last you 10 years :-)