At a level 1 either is probably great. The biggies are being comfortable with the things you will be using as a CRNA.
1. Vents-will you have a lot of them, will you be involved with them or the RT do everything. Are the RT's good and teach you?
2. Drips-sedation(benzos, opiates, and propofol), paralytics, and most importantly vasoactive meds.
3. Codes-they suck but you don't want to be doing it for the first time when you're the provider do you?
4. Monitoring-Art lines, CVP, Swan,ICP/Ventrics etc.
5. Equipment-Prisma, Balloon Pump, etc are all icing on the cake
6. How sick are they- at a level 1 probably not an issue
If you are comfortable with all these things not only will getting in be easier but you won't get as many surprises if you already know your stuff.

Hope this helps