I can't comment on the AT106 or 111. I've seen real no complaints, but seen no raves either.
The "North Group" Apo is sold under several different labels:
Meade, Astro-Professional, Astronomica, Explore Scientific, Tech2000 etc. etc. Basically any cheapish 127mm Apo. is likely to be a Nanjing(North) Group refractor, same glass, (slightly) different tubes.
It was reviewed last year by Sky at Night who found it well corrected for colour, but not so good for SA.
The focuser was found to be stiff and a bit crude.
Its f7.5 so you'd probably want a flattener
Its not awful, but the larger apeture is negated by less-than sterling optics and finish.
I had a very quick look recently, but wasn't overly excited - the (visual)resolution was no better than my 8 year old 102 doublet.
But it does have a whole inch more light gathering.
I've also recently had a look through an FLT110 and a FLT98. I can't imagine anyone being displeased with either. No noticable CA or SA.
Maybe a little 'warm', but it could have been the dust in the air.
Both the 98 & 110 are for sale at Andrews for about the same as you'd pay to import one.
You could have worse dilemmas!
Happy hunting,
PJH
Just my .$02