The drivers I've talked to that just do it for a little extra cash overwhelmingly prefer Lyft. Most said it is because of the better pay but I've also heard more than once that Lyft customer's tend to be more well behaved in the car for whatever reason.
To be fair, this is all anecdotal and I usually prefer not making chit-chat but if the driver insist I always ask them their preference since the driver's always have an opinion that is interesting enough for the duration of the ride.
I have also heard this as well from lyft drivers and I am very curious as to why
Perhaps the people who value that sort of thing are better behaved? Or more likely, it's probably because the people who are willing to pay slightly more for a better experience are better behaved (like Walmart vs Target).
That also stand in contrast to exactly one two experiences with cabbies over ~25 years.
I conclude, based on my limited personal experience, that vetting drivers makes a noticeable difference in driver quality.
Edit: tips?
As a passenger, I exclusively use Lyft.
I'd say they would be one of the last places to transition.
Could just be regional, not really sure? I feel like even with Uber's issues many drivers who do ride-sharing as a "job" won't want to just drop Uber as it may mean losing out on income (not sure if they can make up the loss with driving more for Lyft).