Get the 3000 upgrade e-roms. Check out Roger Lynn Design. I have the upgrade in my 60II, and it works great. You'll still have the 12Bit sampling. I don't anyone will make that trade!
I bought a custom Forat 3000 full option for 950€ and I thought it was a good deal regarding 2nd-hand market here. You can grab a 60 for 450$... so 150$ are really too short IMO.