Well, I think the real good financing deal is the one with the lowest rate (APR). I bought a Suzuki new and financed it; at 2.9% APR, the finance charges were really minimal. And I normally go for good insurance coverage, so that was not an issue. However, if you are financing a used bike, it is likely rates will be much higher, and choice of finance companies more limited. I recall seeing rates 3 or 4 points higher than the promo rates on new bikes.
2009 Suzuki C50T
2011 Moto Guzzi Stelvio NTX