I'm learning Waiting Room by Fugazi. Brilliant song and all about the bass line.
It's only really one riff but it's quite fast and has to be played very cleanly, all imperfections in playing stick out a mile.
I think most Peavey's are underrated. I had a Zephyr and still have an International and considering how well they play and how good they sound, they are dirt cheap.
I regret selling the Zephyr.
If you want cheap, small and practice then the Skoda Roomster is superb. It costs bugger all to run an has an enormous boot for a small car. You can also remove the back seats completely and it's a small van