Between the computer programs (Cubase, Protools, Reaper etc.) and the self-contained units by Roland/Boss, Tascam, Korg, Zoom, there are so many to chose from and they will fit just about any budget.
Surf Sweetwater Sound or Musician's Friend website and you can compare the various features of each type.
"Nothing is what it seems, but everything is exactly what it is." - (B. Banzai) Lefty Union-#72