I'd really recommend this zoom recorder as a portable recording unit. It doubles up as a USB audio interface too which makes it really worth the money. Plug it straight into your laptop or computer to act as an input for any Digital Audio Workstation. It can take XLR or Jack cables for external microphones and inputs too.
https://www.zoom-na.com/products/field-video-recording/field-recording/h5-handy-recorder