While Crisis Suits are out, Commanders are in, and a Commander is just one Crisis "Old Guard who still uses an old retrofitted suit so get off my lawn, you damn younglings" battlesuit away.
Further, I think you end up with more Tactical drones with the Start Collecting Box than you do with the Infiltration Cadre, but i could be wrong on that.
Both Strikers/Breachers and Pathfinders are useful for their own purposes, and in an infantry-focused edition like this, one can probably almost always have more. I'd consider it a wash unless you've a pressing need for either or are oversaturated in only one of 'em.
Stealth suits got a significant boost, and Piranhas seem facially to be worth bringing (haven't played them yet), and either way you get an Ethereal...
And they're priced the same, you say? Just to be clear, did they price the Infiltration Cadre at the Start Collecting price, or did they price the Start Collecting at Infiltration Cadre prices?
Because if its the former, you're getting a helluva deal on BOTH, and there's basically nothing worthless in either set or both (or multiples of either set, or both) aside from a plethora of Ethereals...
Personally, I'd buy both, but I have no shame.