Since you're not committed to any image processing package yet, I'd suggest trying the current best of breeds on free evaluation - they all do a 1 month free trial. Don't mix up pixel editors (like Photoshop, Affinity, GIMP) with image development & cataloging software like Lightroom. My suggestions (from having tried each of these) are:
Lightroom (currently still using 5.7, it's my main image processor)
PhotoRaw 2018 from On1 (I currently use this for deeper editing & more extreme effects than LR can achieve, crosses into Photoshop territory)
DXO Photolab (I occasionally use the previous version DXO Optics Pro - quite automated, can work well)
Alien Skin Exposure 3 (very pre-set based, didn't add anything to what I already have).
Capture One (very effective RAW editor, I had a version for Sony only, but no advantage over Lightroom, very expensive)
I've done some comparisons between some of these packages on the same image, and each brings something different to the party, but no one was distinctly better than the other *in terms of the results they produced*. Which ever you buy, invest time and effort learning to get the best from it.