Tonight is a 500 pt game and I am having trouble deciding between:

3 Robot Supermen and

V Maxima with Inspiring Command and 15 pts of other feats

or

U Man of Steel

I thought I had the Clark Kent LE from CD but I don't.

Go with the Man of Steel, he's so sweet. Think about playing that team, You have to deal with 4 HSS beat sticks. One thing you should consider is if this is non theme you should drop a bot and add some support like Rip it Up, nanobots, and protected. With the extra points you could add a Jinx or a TK'er or a Starter Batman. It just depends on the type of event and if you care about the prize.