+R discs are not as compatible with DVD players because some DVD players block that particular booktype.
If you drive supports it you can use bit setting to change the "bit" from DVD+R to DVD-ROM which greatly increases compatibility.
There are of course differences between all players so there is no universal answer to your question.
Crappy media will decrease compatibility dramatically, +R or -R.
But yes, imo overall -R is more compatible.