I dont think theres any difference really. Its easier to use by hand I find. Ive tried both.
Amazing product, ive always thought its SRP but much better. Looks amazing on black, gives a really glossy and deep shine, and brings the metallic flake out too. Perfect base for just about anything too. Wax or Sealant. Easy to apply and remove, no dust.
I tend to apply one layer of wax then wait again until its been washed after a few days or a week, then re apply the wax.