best family mid size suv?

[cpapple95]

I am looking for a good premium mid size suv with the price in the $45k or less range. fuel efficiency should be 15 or more city/21 (20 is ok) or more hwy
as low and as green emissions as possible.
will be a family vehicle- need kid-friendly, safe, quality
needs good power
light off-roading -- beach , dirt paths AWD or 4wd
regular fuel preferred
spacious

any suggestions?
im looking at :

toyota 4runner ($42,870)
4.0L V6 270 hp 278 lb-ft torque
all-time 4wd
Limited
17/22 regular fuel


honda pilot($39,335)
touring 3.5L V6 250 hp 253 lb-ft torque
AWD
16/22 regular fuel

acura mdx($44,335)
3.7L V6 300 hp 275 lb-ft torque
SH-AWD
15/20 Premium fuel

volvo xc90($40,050)
3.2L V6 253 hp 236 lb-ft torque
AWD
15/21 regular fuel

ford flex ($40,390)
SEL 3.5L V6 turbocharged engine 355 HP and 350 lb-ft of torque
AWD
16/22 regular fuel

so which would be best?