It's a month away!

I ran a nice easy 4-miler with a friend today.  Our half is only a month away, and from our conversation I think our feelings are mixed.  On the one hand, we're both in the hardest part of our half marathon training programs, and so I think we're a bit ready to be done with training.  I'm really ready for tapering just so some of my nagging non-injuries have a chance to heal.

But I have to decide which shoes I want to wear for the half:

• My workhorse Nike Pegasus 30s.   I have nearly 200 miles on these now, and they're still holding up great.   They're a bit squishy, however, and I find myself wondering how much energy I lose compressing the sole.
• Pros:  I know I can run twelve miles in these without trashing my legs.
• Cons:  I think they force more of a heel strike than I'd like, and I think they might slow me a bit.
• My Saucony Mirages.  These are sort of the stability version of the Kinvara, with a plastic insert on the medial side and a stiffer, less flexible sole.   They're very light and they feel fast.The uppers don't fit my feet as well as the Nikes, but I ran 6 miles at an 8:48 pace in my last race in them, and they are extremely responsive.
• Pros: Quick, light feels.
• Cons:  Worried the lack of cushioning will trash my legs if my longest run in them is six miles.

So, I'm really not sure.  I'm tempted to take the Mirages on a longer run, but I'm worried that I'll introduce an injury before the race.

What should I do?