Re: A "better" field of view???
Eyepieces alone don't have a "magnification". They have a focal length and an apparent field of view (AFOV). Magnification (when mounted in a scope) = Scope FL / Eyepiece FL.
The magnification will determine how big individual things appear to be, the AFOV determines how many things will fit in the view.
So, a smaller FL eyepiece gives you bigger things, a wider AFOV gives you more of them. These are independant parameters. You can have short or long FL and wide/narrow AFOV eyepieces. There's no empirical difference in absolute optical quality based on the focal length or AFOV - it's purely down to to how well made each eyepiece is... Contrast in practice turns out to be much more about the lens quality, optical construction/design - ortho's are very good - and the coatings and flocking of the eyepiece, rather than the "numbers"
Sooooo the answer to your question (ignoring anything to do with your scope optics and focussing, mount and seeing conditions) is simply:
how big do you want things to be and how many of them do you want to see?
The BEST way is to try various eyepieces yourself in your scope and SEE.
Telescope:Equinox ED80 Pro (Schott/Ohara Fluorite) with Baader Steeltrack + Nexstar 6SE OTA
Mount: Skywatcher HEQ5 Pro+EQDIR + ADM bling Camera: JTW 1100D Ultimate V3, Astronomik Clip filters, Samsung SCB-4000, IS DBK21AU618.AS
Accessories: Baader 8-24 MkIII, Ortho 5mm, Aspheric 31mm, Meade 12mm reticule, Televue Powermate 2x & 2.5x, BAST Motorfocus+FCUSB, Skywatcher Field Flattener, Televue 0.8x FR/FF, Orion RACI, Orion Mag Mini/SSAG, Canon IS 15x50 Bins
Software: EQMOD/Stellarium/Registax/BackyardEOS/PixInsight,PHD,AlignMaster, AstroTortilla