Build Cabinets or Buy Cabinets from Big Box

All,
Was hoping for some feedback on what are the pros and cons of building your own cabinets vs buying them from a big box store like home depot.
I'll preface this by saying that building cabinets makes me nervous. I'm pretty sure I can handle it, but I want my conversion to look as professional and neat as it can. Not to sure my building skills will make them 'pretty' at all.
Buy from Home Depot:
Pro's
* Very Nice Cabinets and already painted/finished
* Many sizes in the big box store, i'm confident I can find good si*zes to work with
Cons
* Very Expensive
* Since they are prebuilt, they will be very heavy with all sides
Build your Cabinets
Pro's
* Cheaper (Is this true though?)
* Custom fit exactly to your trailer. Therefore minimizing weight and space.
Cons
* Painting them!
* Building them and not really having the right tools to do the doors and whatnot.
What am I missing? What do you all recommend?
Was hoping for some feedback on what are the pros and cons of building your own cabinets vs buying them from a big box store like home depot.
I'll preface this by saying that building cabinets makes me nervous. I'm pretty sure I can handle it, but I want my conversion to look as professional and neat as it can. Not to sure my building skills will make them 'pretty' at all.
Buy from Home Depot:
Pro's
* Very Nice Cabinets and already painted/finished
* Many sizes in the big box store, i'm confident I can find good si*zes to work with
Cons
* Very Expensive
* Since they are prebuilt, they will be very heavy with all sides
Build your Cabinets
Pro's
* Cheaper (Is this true though?)
* Custom fit exactly to your trailer. Therefore minimizing weight and space.
Cons
* Painting them!
* Building them and not really having the right tools to do the doors and whatnot.
What am I missing? What do you all recommend?