I have come to Prime Go from Pioneer/Reloop - I loved my Mixon 4 and Algoriddim DJay Pro AI!!
I had a similar experience to you in terms of the EQ and the general feeling but I think for me it has settled down.
I do miss having 4 channels/8 pads but actually love the (go) unit now . I fully get the sync issues - IMO not being able to fully adjust the beatgrid has made that useless - I can only move left/right not change the length/bpm… That said - I do love it!! Yes - the layout is quirky and the hot cues are in the wrong place/hard to remember (am I on BANK or not) but it does make me concentrate… For the EQ side - I adjusted according to an article I found (Link below) and this made all of the difference for me - gave me more confidence!)
If only I could add more channels/better FX/Sampler pads etc…