white rhino is killer but its not that new on the market...there have to been some newer strains on the scene with a greater potency...i justed grabbed some great white shark w/ 14% tch...Rhino is between 11-12%...and there are plenty of strains stronger than the shark...greenhouse seeds has some potent plants...they have WW and WR but some stronger strains also like the Doctor, GWS, The Church, etc. Rhino is strong and dependable but White Russian among many other strains has a higher thc%