This thread is for the best armies you've ever played. If you have several "best" armies, you can post them all
I guess I have to start the show. Here's the army I'm currently playing:

Catapult 'Cynosure' 215 = 245
+ BF-P-A028 Aggressive Stance (30)

Raven 'Spettro' 128 = 142
+ Mila Mazur 14

WH Kelswa Assault Tank 90
Merc Sniper 58
Merc Faction Pride 20
Merc Zahn Heavy Transport 30
'Rhodes Graces' Combat Technicians 15
----------
600

I like even the sight of the army: both Cynosure and Spettro are red, as well as Kelswa, so I nicknamed it as "The Red Army"
The tactics is obvious: keep Kelswa within 6" from Catapult to get Aggressive Stance benefit, and keep them both behind the wall. Spettro should pick the juicy target and place Homing Beacon on it. Then destroy the target with your heavy-hitters. Artillery is used to force enemy to move (my army isn't very mobile, and it hates to lose cover), and sometimes Spettro + Sniper are enough to suppress enemy arty.

My last armies were built for the Alabama (USA) State Championships, about two months ago.

There were some special rules for all 5 rounds: faction pure with House Allies only, no recruitment except to put gunslinger pilots on Mechs with a faction symbol.

My 750-point Army (first 3 rounds of play):
HD Vixen / Chris Chapman (3/2/1 pilot) / RISC Advanced Pulse Module
HD Bishop w/ HD Mantueffel Tank
4 SS Arrow IV Tanks
9 HD ATV Squads
4 HD Purifier Battle Armor
SS Mobile HQ
True Grit

This army went 3-0. No games were ever in question - I went as first player in 2 games, which let the infiltrating ATVs do a great deal of damage on turn 1. In the game where I was player 2, the other person charged into my deployment zone, salvaging the Vixen - but then, I was able to direct fire with the Arrow IV Tanks, and eventually wiped out everything he had.


4th Round was a 600-Point Semi-Final:
HD Vixen / Chris Chapman / RISC APM
HD Vixen / Kelly Bonilla / RISC APM
2 SS Arrow IV Tanks
8 HD ATV Squads
True Grit

I decided to drop the Mantueffel and Bishop from the earlier army, and use a second Vixen instead. I really wanted to have something with 12 attack in case I needed it. This game was very close - he was 1 shot away from eliminating a salvaged Vixen, which would have won the game for him. But I held on to win.


Final Round - 300 Points:
Glory Nyx / Gloria / RISC APM
Fortune Nyx / Fortuna / RISC APM

(I had not intended to play so much RISC APM, but the point totals just worked out that way!) In my last game, I failed a break-away roll even though I had Evade, and my opponent rolled a 16 on the next turn to capture that same Nyx. Lost the game, but if I could do it over again, I would play the same army and maybe try to be a little more patient.

Hope all of this is interesting to others!

Wow! This would defenitely be very interesting to my friend, who is going to order the second Vixen and two RISC APMs right today We're generally playing 600pts, as it's kinda "the standard" format.
But EIGHT Scout ATVs? Why so many? I guess you're trying to overwhelm opponent's anti-personnel facilities, right?
It would be great to know what PCs/missions would you suggest for this army. Thanks in advance!