Very light, well made with plenty of storage pockets. Wife uses one and is very happy with it having replaced her Aerolite IV with it.
Colour schemes on many are garish though and more garish the more available they seem to be (there's a reason for that!)
I have a Mizuno Aerolite, not entirely sure if it is the 'X' range. Picture attached.
It is ok.
Pros
It it lightweight
Has plenty of space and enough compartments for everything you need.
Cons
The clubs sometimes get cluttered so can be difficult to put back in the bag, although this is probably due to how I have arranged them.
Second issue I have had is the zip came off the small pocket at the top where I used to keep my wallet and keys.
Third issue, although this hasn't happened for a while, the mechanism that connects the legs to the stand kept coming free so one of the legs wouldn't work. But it is easy enough to reattach.
Pockets are huge, dividers seem to be quite well made and seems to be waterproof with showercap on. Time will tell on these last two items though.
I have had a fair few mizuno/other carry bags over the years and they all started to degrade almost straight away, had this one two months and nothing to report on the negative side yet.
Did I say I love it?
Yep bought one of these for £49 in January.
nice and light - probably not as strongly built as a £150 stand bag but fine if you avoid kicking, throwing and hitting it.