Pull through splitters can be very tricky and frustrating. I have never had much, if any luck with them. It is very difficult for me to get an even split with the pull through and the larger, (and longer) the piece, the harder to get a good even split.
If you are also considering splitting the exotics, then the tensile strength of the particular exotic comes into play. Many or even most of the exotics are simply not strong enough for the pull through action.
My best experience comes from the crank or motorized splitters, both of which are very significantly higher priced than the pull through models.
This based on my personal experience (or lack thereof) with the pull through models. I have never had much, if any success with them.
Paul