[northwind]

Undertrays and bellypans both take a beating from road debris, and home spraying usually means using cellulose or at best singlepack top coats, which are pretty soft. You can get very good results from an aerosol, but I wouldn't expect it to last too well- even factory-applied 2-pack clears can take impact damage after all. Getting a good colourmatch is also a total sod on some of the Suzuki colours.

Also, by the time you buy your tin of primer, tin of base coat, tin of laquer, wet and dry papers, and rubbing compound you've got a fair bit spent on raw materials, then add in your own time.