Omega 10066 and 10065 are a smaller knot than the 49. I love mine for face lathering. And inexpensive to try out. Omega 10005 is much the same, but wood, not plastic.
my 10065 has become my go to brush for the last 6 odd months, to include a wet/dry break in cycle with occasional uses on a new butterscotch acrylic handled SOC boar (like the one above) just to have ready to go when my 1st SOC gives up the ghost. and for the record, I prefer the weight of the Cherry handle better than the acrylic.
I've also got an Omega 40033 as my preferred traveler. it may be the perfect boar knot, and the handle is big enough to use daily at home too.
I ran through several of the smaller Semogues and will always keep the SOCs, but I like Omega's offerings otherwise more these days. I haven't tried a Zenith, and don't feel a need to, because I'm not a collector, per se.