I have used a gossen meter (lesser version to the one you are considering) and sekonic L398 (and essentially same one L27C or something like that), and of course it depends.
-- If mostly incident and not very low light--the sekonic is much more convenient.
-- But for reflected readings (which your dslr can do/is a usable meter), or very low light, the gossen can do what the sekonic is poor at, or cannot do.
-- I had the sekonics (second one after my kit was stolen) since mid 1960's, and the cell never changed/was 100% reliable.
One nice thing about the sekonic is you can paste your own modifictions on it--I added direct high (w/ slide) and low (w/o slide) reading f-stop at about 1/iso sec--see attached. You can also get pack of "high" slides to direct read shutter speed at particular f stop/iso combination as I recall (actually I think maybe they are to directly read f-stop but maybe not for 1/iso--I don't recall precisely).
Last edited by dms; 03-22-2016 at 08:48 PM.