Is row 4 in the EMB190 worth looking for (over row 5). Key questions;

- Is there a "wall" resulting in no underfloor storage between last row of J and first row of Y
- The AB side is right behind business with only an A seat meaning that B sticks out into the aisle. Is this an issue - hit by carts, people etc. Is there then a benefit that the E/F side has a wider wall in front of it?
- What is the risk that you are subbed to the 10 business seat version where row 4 is now in business, and then shoved somewhere down the back. Is this a sig risk? (or geenrally by T-24 solved?).

- Are there any in Y material differences between the 10 J and 9 J variants.

I know, I know only an 60-80 min flight. Just curious, and over thinking.