I would suggest maybe a Cyberstorm MKII. It is a proven performer and several have sold recently for reasonable amounts on EBay ($225 - $250). That's down from the $400 plus they were fetching earlier this year. Even if it comes with no Ram you can pick up the 4 32MB simms on EBay for under $20. The MKII is what I use in my A3000T (Mine is overclocked to 66).
Dan