the term hybrid is pretty basic, it usually involves mating a different head to a different block, among other things
LS-VTEC is usually a B18 non vtec integra LS block with a b16 civic si head on it, there are alot of combinations, the main point of them is to use the high reving high compression head and a torque-ier block (LS), to maximize power.
i dont own one, although i have worked on a few and of course raced a few.
some ppl mate my h22a head to a h23 bottom end to make a 2.3 liter VTEC

again im not really an expert on hybrids, but they tend to make decent gains.

i would prefer to drop a worked out h22a into a civic over a worked b18c just based on cost alone.

the h22a (my engine) is good to 8000 stock, and with some money into the head and pistons you are looking at over 220 HP at the crank. put that in a civic and its low 13's all motor for a few grand. not bad at all

not to mention the h series makes the most torque out of the honda inline 4's, more than the s2000

~boom