Solid particles do not have to have aheavy load to handle a lot of oil. The resin base in which the particles are embedded have a lot to do with the oil handling of the ball, as well as the nature of the core and how it is drilled.
There are many particle pearls, but fewer solid particles these days, as people's unwllingness to properly care for them has made many manufacturers reduce the number of solid particle they make.
Currently Roto-Grip makes the EPic Battle, Brunswick makes the Mammoth, Storm makes the Passion and Lanemasters makes several (Big Bang, World Class, Terminator, Yeah Baby!), Lane#1 makes the Carbide Plus, Visionary makes the Centaur AMB Particle that can handle heavier amounts of oil.
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"None are so blind as those who will not see."