id think if your just pulling the engine, take it out the top. dropping the sub frame requires you to get an alignment when you put it back in.
out the bottom, your talking taking the axles out, the ball joints, un do the lines and wires for the trans, and abs unbolting the rack, dropping the sub frame bolts, then lift the car one way or another. plus all the same stuff to get the engine un done. so out the bottom for just the engine is twice the work in the end.
tips for out the top: you need to take the master cylinder off, ( for clearance) and the a/c compressor, ( unless its dry or you have it vac'ed out) the p/s pump is always cleaner to leave behind as well.
