IQ3 has 1TB of storage and can record like 5 or 6 shows at once.
It is wifi compatible.
Any show you stumble across can be viewed from the beginning with a "start over" function.
The menu is pretty with DVD type covers for each program. It suggests shows based on your viewing habits and also lists what's trending.
The remote is blue tooth which means that you don't have to point it the box and it can transmit through a cupboard door. Which I am sure your interior designer will love.
I had a "standard" box in the study, so switching the IQ2 cost me $2.50 per week. I think if you want a second box in any room it only costs $5.00 per week anyway.
It might be buggy, but like most devices these days (like your TV or blu ray) they update themselves via their wifi connection. So soon it will update it's firmware I'm sure.
I still think it's worth it. There is a lot of media about it today (the bugs), but you have to look a bit deeper and see that the reporting is from organisations that have an interest in Stan, Netflix etc.