Even if the other is better you'd go with the worse one?
Well, both of your servers offer similar latency on my end. Your servers seem stable, can't comment on Lub's as of yet.
Lub has better pricing, your pricing is a little more.
Lub has a more comprehensive control panel, yours has improved but it is barebones in comparison.
Lub seems to have a better billing system, yours is adequate but not ideal.
I'm not sure there is any reason, financially or practically, to stay with Kaphost at this point.