I've had a pair of Pentax UCF-Mini 9x21 compact porro prisms since 1996 that handle my pocket needs. Better performance than you'd think and enough that I simply haven't felt the need for something newer.
FOV 330' (TFOV 6.3*), 3.4" x 4.1", 7.4 oz
Accordingly I agree with those who recommend auditioning the current Bushnell / B&L custom compact porro prisms.