Diesel generator advice...?

[john-e89]

Bit of a long shot but does anyone have any experience with diesel generators. I need 3 phase to run at least one, but if possible, two 11 KW 200+ litre compressors, ideally with two 400V outputs but one would be ok for now. It needs to be for industrial use, ie, not one that is good for only 500 odd hrs a year, it needs to run up to approx 8 hrs a day. Cost is what it is, not much a I can do, I want an excellent quality unit that will run day in day out. The reason for the post is there are a miriad of them and being quite honest I’ve no experience with them at this level, so any pointers to quality units appreciated.