reccomending what type shooting bench is akin to reccomending
what type gun or fishing rod is best. all those reccomended
or pictured no doubt work well for those using them for their particular purpose.
your particular type use will determine whats best for you.
for simply range work any solid platform will work. if you intend using it for hunting lots of other things must be considered.
first off size and weight could be an issue if you intend carrying it very far. then the type terrain might require extensive leg adjustments. especially if your going to be using it in different type terrain.
in all cases the bench needs to be solid which was your reason in the first place.
weight dosent necessarily correlate with being solid.
solid is determined by design and assembly. a 1 1/2" thick
top for example could be less solid than a 1/2" thick top depending on whats under it by framework.
there are usually several methods for aquiring a good bench.
first would be to find somebody using one for your intended purpose that has been tweeked to perfection. then copy it.
the other is to just build or buy one and let the ideas begin.
my first bench for hunting was a wooden carpenters saw horse
with a piece of plywood screwed on top. it worked well if the ground was even. otherwise we were shimming the legs.