Only 20% of ownership cost is the purchase price-80% comes after the sale. Get quotes from all dealers in your area. Compare prices & warranties. Lastly, & most important, is the dealer's service record. You will be married to this dealer as long as you have the unit if you want dealer service.

I'd personally make a decision, then lease the unit for a year. I recomend this so that you can check their service & not be locked into a long term situation- just my 2 cents

first question should be how many hours do i use it 500 hours or 2500 hours a year cheap or quility

yes i would also check with the other mfg's too
cat, yale and hyster also make a pretty decent 3 wheel sitdown but like john said, do your research on the dealers involved and make sure they have a good service history. 3 wheel lifts are a fairly unique breed and from my experience i tend to lean towards the cat or yale for dependablilty and servicability.

I would vote for the Crown (never have or ever will worked for Crown) but what is most important is the support and reputation of the dealer that will be buying from - check that out carefully you are buying the whole package response time, rental units available, service rentals, on shelf parts availability, a knowledgeable sales rep (do the always have to call someone to get an answer) and the dealer personnel behind them - get references fro m customers that are in you same business. Of course no one will give a list of bad references or sell you a lift that is less than (heavy duty). A price quote never tells you the whole story - only that some prices are higher and lower than others and those prices today can change from day to day.
Almost forgot - when you are comparing proposals - CAREFULLY evaluate the battery & charger specification - Make, Model, capacities ( the charger should match the battery AHC within + or - 5%, single or three phase - watch out for someone who is offering a 110 volt battery charger. Battery warranties can be tricky also - some will say they have a 5 year warranty - but a portion of the 5 years maybe prorated - ask questions - get all answers in writing. I had a large customer that told me - "If a sales person only gives me a verbal answer, I believe nothing he said. If he puts it in writing - I believe about 50% of what he wrote."