OK I flew on both the 220's today (VH-X4A and VH-X4B) and have a few thoughts/opinions on the J cabin for anyone that care
I sat in 1A and then 2A. In that respect, the bulkhead limits legroom and it feels a little tighter than row 1 on the 737, while row 2 of course one can stretch under the seat in front. My preference would be for row 2 or 3(on the right only) for that reason. Bin space is a little better for row 1 than on many of the 737's, but there's still some equipment in a smaller bin over 1AC.
Seat: I'd say it's not quite as comfy as the 717 J seat it replaces, but is absolutely fine for a few hours of flight. If QF puts this aircraft on say 4+ hour sectors, it might get a bit challenging, but personally I had no real problems with it (but only on short sectors).
Tray table is sturdy and the inbuilt device holder is pretty neat. No cup/glass holder spot though which I found interesting.
The inter-seat table is smaller than on the 737, but has a higher "lip" to it which is possibly a little more helpful during turbulence (and the 220 seems to suffer a little more than the 737 from this in some situations).
Power: I'm perplexed at why there isn't universal AC power in J (when Y has it in every row). Perhaps a space issue, or I'm not sure, but seems odd. However the 60W USB-C makes up for this to some degree - specially with more modern laptops and other devices which support charging direct via USB-C then it may not be so much of an issue. Of course there's also USB-A though this is an ever disappearing standard as time moves forward and just about everyone (some dragged kicking and screaming) have moved to USB-C.
Wireless Charging: Up thread someone asked about this if it was fast charging. I'm going to say no. Further, I found this next to useless for me sadly (I tried on both flights). My S24+ which yes is new, and a hog, did fit snugly in the charging area, and it registered the wireless charge.. but basically that gave my phone at least bugger all. Now, I do have a (not too thick plastic) backing case on my phone, but that does not get in the way of my wireless charger at home, so not too sure what to think. Perhaps with smaller phones this might be better and more useful, but sadly this was not good for me. Plugging into the 60W USB-C of course gave me juice. So Jury out on that one. The placement of the charging pad in the armrest is pretty handy and ensures a device won't fall out while charging, which is good.
WiFI: For me at least worked consistently as on a 737 with no dropouts. Speed of around 10Mbps which isn't too bad imo - certainly enough for say youtube or some other streaming.
Something that did surprise me a bit is that the 220 in J was a little bit noisier (around 70-75Db) vs down the back of the 717 a few rows from the rear mounted engines (which was around 70). It's not major, but did surprise me just a tad. It's still a pretty quiet aircraft though (the engine spool up is pretty neat thought
).
I didn't go to the lav so can't comment on that.
The thing takes off like a rocket - not quite a 717 but still it can go. As noted above it could be a bit prone to turbulence though we were flying at a lower altitude (as most MEL-CBR do), perhaps flying higher on a longer sector it may be a bit better - though I think others have noted thi also. It's not bad by any means, just think a 737 would be more stable in similar conditions.
All in all pretty good flights. Crews were fine. Still spruiking the new aircraft and how much better it will be than the 717 and all that. Pretty standard QF short hop experiences - with that slight new plane smell thrown in.