Never played it until the completion of some missing challenges forced me, but it was really fun. And thinking about it I don't really know why I waited so long because Juggernauts are absolutely wonderful. 10 reasons for that:
1. Geth always do what they say, that's why a Spitfire really spits fire ... kinda
2. They can have filthy sex with banshees and ... survive
3. Juggernauts can help you solve Sudokus of any difficulty in fragments of nanoseconds
5. Juggernauts can even stream p0rn (if you choose the right options in the hard-on plattform-evolutions)
6. Juggernauts will drive you home from a party cause they never drink and even when you're absolutely wasted noone will ever dare to touch you whatever you might do because ... cough ... spitfire
7. They don't need thighs to have perfect legs
8. Juggernauts prevent you from getting STDs from those filthy tempting Quarian girls where you never know who they already let under their suits (I know of a specific female Quarian who had something going on with at least hundreds of thousands of male Shepards)
9. You always walk home with a groupie or two because juggernauts look just like Adam Sandler and you seem to be his friend
10. Juggs
(11. 8200 Shields + 25% DR)
(12. Nothing beats a well specced geth turret as support for your barbecue ... 6A!)