I've considered getting a drum machine for practice purposes. I have a nice metronome, but I've been reading a book titled "Funk Bass" which is actually really helpful. It suggests practicing with a drum machine to expand groove possibilities and aid in giving ideas for funk lines. I know nothing about them. I'd like for it to be programmable so my drummer could fiddle with it and program some beats for me to practice with. Can anybody help me figure out which ones are worth looking and and which ones are duds? I'd rather not spend too much (100-200 max).