The Countess and Friends -- which mod?

By DailyRich, in X-Wing Squad Lists

I have a small-ship only tournament coming up this weekend, and I'm looking at running Countess Ryad w/Outmaneuver and TIE/x7. The debate I'm having is which of these two sets of wingmen to bring and therefore which modification to take:

2x Onyx with the title and all ships taking Twin Ion Engine MK II

or

2x Delta with the title and all ships taking Stealth Device

The twin Onyxes would have a greater chance of pulling off a green for the evade token and have a slightly higher PS at which to shoot, but the two Deltas allow the extra green die (I know, I KNOW, never trust the green dice, but I've flown it and four dice plus an evade token is a TOUGH combo).

Or do both suck and I'm destined to lose? :)