Ah, the lovely BP/W versus BC debate. What great fun.
If you listen to BP/W people, one would question why the
BC is made (other than for profit of the big companies).
While the BC people talk about BC's as if all of them are the same.
I have both, actually like both, but for different reasons.
A couple of important considerations regarding BP/W - if you change weighting, you will have to change both distribution to have good trim and good surface position. This can be due to chnanging wet suits or changing tanks. Not the easiest if conditions change a lot. Regardless of what some will say, it is fairly easy to be thrown face first on the surface, if weighted incorrectly. It is also possible to be thrown backward, which is not always that comfortable. Trim can be a similar issue.
Yes, there are a fair number of people that have every possible combination worked out, but this takes some work and time and is not a lot of fun. Likewise, there are people that only dive with one or two configurations and don't have an issue. Your decision.
A good Back inflate BC has most of the qualities of a good BP/W, but is much easier to adjust, so if one is going to travel, it is most likely the best middle of the road solution.
Doing beach entries? BC or one of the deluxe BP/W's.
Warm water? BC
Dry suit? BP/W
As there are hundreds of options and some involve personal choices, make the one you think is best and then learn to live with the choice for a while.
Whichever you decide, also spend a little time learning the safety issues and how they are different. Weight belts, for example, always need to come off first when exiting with equipment removal to a boat. Integrated weights removal may make it easier for the person picking up the gear, but are not a safety concern.