I understand totally about wanting to get awayfrom the computer, especially if you work on a comp all day. Its been over twenty years since I recorded on hard disk like the tascam, so I don't really know what there is on the market these days, I will have a look. When I first started recordings back in the late 80's we used tape, as a mate of mine had this massive ampex reel to reel in his living room, it was massive. Have you thought about recording on an ipad, there are some good apps out there. These days I record onto my mac with a UAD Apollo soundcard. I sometimes like to jam with the computer and have ableton live synced up to my hardware, that is good fun, and then sometimes I just run my hardware thru the comp without any DAW. But I am sure there are some really good choices of harddisk recorder out there.
Check out Tascam DP-24SD 24 Track Digital Portastudio