In my opinion, I think you've hit on one of the best NC cigar wrappers out there - the Cameroon (not maduro, unfortunately).

Give the Cuesta Rey Stanford's Cameroon Reserve a shot - you won't be disappointed, especially if you liked the Oliva Series G...

And if you want to have a maduro that will blow your socks off, try the ISOM Cohiba Secretos or Magicos Maduros 5.