After watching the SOTAR video gauge testing the Geissele bolt carrier and going over the construction of it, I ordered one as well. Oddly enough, its built to tighter tolerances than my JP bolt carrier, and worked better with the JP bolt as well.
For the price (about $120 with promos/on sale if you can find them in stock), the value in that bolt carrier is a steal. Oddly enough, its also one of the lowest priced items Geissele sells.