Two job offers. Help me make a decision!

Background: Finished BSN in January, worked 2 months in NICU, 1 month in Acute Care. Doing more med/surge is not an option - I'd rather change profession entirely.

Ok! On with the show.

Job A: Acute Dialysis in the most prestigious hospital in the country. 1:2 patient ratio. Will also be taught AB0 apheresis, immunoabsorbtion and plasma separation. Will always be in in the room with minimum one more RN (only RNs working there. No doctors, no nothing (they can be called quickly, obviously)). 7½ hour shifts with 30 minute break.

Job B: Chronics in a nice hospital. 1:2½ patient ratio. A few acutes now and then, but it seems like it'll be 95% chronics. Always minimum one more RN in the room. Only RNs working there. 7 hour shifts with ½ hour break and 1 hour scheduled education and/or chatting each shift. There's no turnover.

Both have a minimum of 2 months training.

So which do I choose? I want job A because it seems to offer an amazing package of skills I can learn and I'll get experience with all kinds of critical situations MUCH more quickly than with the other job. I'm also thinking this job will look better on paper if I later want to go into a different specialty such as anaesthesiology (just an example). I want job B because it seems much more laid back and a sweet deal over all. I'm also a bit scared that I'll be overwhelmed by job A and I really want to stay in one position for a year now. On the other hand, I'm scared that job B won't look good enough on paper if I want to switch to something else in a year or so and that my skills in general won't develop outside of handling a machine.

Thoughts? And as many of them as possible, please!