Honestly there are no bad seats. I have NOT been in the 400 level. I have been on the dolphins side in the 140's a few times, about 10-20 rows up is great there. The club is also good, though yes they are expensive, but the sight lines are good and you have access to the nice club level which I think is even better than the new Dallas stadium. Ours is much more open and they have a post game band, all the games are on, post game press conferences etc.
I have been in the endzone more than once and the closer you get to the field the better, i sat right above the tunnel once and those are great but with any football game, if all of the action is on the other side you wont get the close view of the scoring plays.
By far, the best seats in the stadium are Dolphins Field Club. They are on the grass in the end zone and you have actual seating, access to the entire club level, really access to the whole stadium except for the Ocean Drive Club. Field club is all you can eat, all you can drink non-alcohol, former cheerleaders (hostesses) escort you to the seats, you have views of the teams coming in and out of the field, or cheerleaders and halftime entertainment depending on which side you're on east & west respectively. They also provide ponchos if it rains. Two years ago I went on veterans day and sat field club west, got to high five manny fernandez and john offerdahl walking off after the coin toss, and got to high five the flyover pilots in the 3rd qtr. After the game I even met Wayne Huizenga walking along past the Ocean Drive Club. Last year we went and sat club level for the Pittsburgh game and it was also great except for the fact that we got absolutely ROBBED of a victory.
The Ford Field club is expensive and on the sideline but its standing room only and in the corner, and the locker room club is OK but again, standing room only, its on the south side of the east field club where the marlins dugout is. Access and food etc for those is the same.
The Ocean Drive club is an ultralounge that is under the stadium thats set up like a nightclub. not sure if they have it anymore, but it was an additional three hundred or so to get in there.
If you show up early, they usually have a pregame concert, I've seen Jimmy Buffett and a few other good performers pre game on the south side of the stadium, they also have the orange carpet so you can see celebrities walk in, they also show the orange carpet arrivals inside on the big HDTV.
It really is a great place, maybe because I'm a dolphins fan and around like minded folks, but I've been to Arizona, Dallas new & old, Old meadowlands, Old Veterans Stadium, and Gilette stadium in New England.
By far our stadium experience is better, the only major thing between us and Arizona is the wheel in field and indoor aspect. Dallas has the retractable roof, huge HDTV center field and they have their "nightclub" where the players walk through to the field, but you have to have special stadium passes. Dallas is by far more expensive, even basic club seats are $330 face value, suites can be $2000+ per person, per game FACE VALUE.
Also in Dallas the tailgating is lousy because Jerry has a rule that only the outside parking spaces can be used for tailgating, basically forcing you into the stadium to buy drinks and hang out in the bar areas. Also annoying if you have endzone seats on one side of the stadium, if you try to walk in on the side you have to walk in through the gift shop like how disney does it, exit through the gift shop... Parking costs an arm in the outside areas and a leg on the closer areas. Food in the club level though is EXCELLENT in Dallas, its on par with a top restaurant, and its WAY overpriced. Ordering pizza in a suite? $90. Kobe beef burger in the club $13 (but it is AMAZING). Beers are $8 or $9, mixed drinks too, $13-$15.
Our tailgating is awesome, lots of good dolphins fans hanging out.
The thing that annoys me the most about our stadium is they got rid of the old fight song and replaced it with the Jimmy Buffett Fins song with modified lyrics. BRING OUR FIGHT SONG BACK!! yes its cheesy but its ours!!! Oh and the "fins up" thing, that HAS TO GO. get rid of those two things and the jets merchandise in the gift shop and that would make it perfect.