The abiltiy to productively run high speed requires a top notch operator and extremely accurate tooling. Conventional runs are a lot more forgiving. I agree with all the other statements on run lengths. I have made the break at 10,000' before I will consider a high speed run. The problem with a high speed run is competition.
Large runs are normally high competition and low profit margin.
It's not a jointed machine but it does have higher rpm spindle rates which could give you a high quality finish at a good feed rate. Try to see the equipment in a productive operating environment. I supervise production over two moulders in a company that grew like yours. Our first few moulders were crued at best, until they purcased a Diehl 405 jointed moulder with 5 heads 7 years ago. As our customer base grew and the aging Diehl was down for frequent repairs, we knew we needed a new moulder.