Im seriously considering upgrading to a sawstop contractor saw..safety reasons of course and an early Christmas present..I would appreciate talking with anyone who has experience with one. I have space and access limitations so am concerned about if i can get it into my basement thru bulkhead access. should i consider accessories during intial purchase or wait..e.g cast iron wings, mobile base? Any help on how to go about this big purchase would be great. 

Thanks Andrew..i had considered emptying boxes to lighten the weight but decided to just rent a hand truck and take advantage of leverage. There are several excellent youtube videos that detail how to assemble this particular saw. I have decided on adding a mobile base, cast wings snd an upgraded fence. Go big or go home they say! The biggest challenge will be installing the base to the main saw then lifting to an upright position. Recommended as a  two person job but using mechanical advantage i could hopefully make it a one person job. The purchase is via woodcraft walpole but unfortunately they could provide little additional information..

I could swing it price wise but im all by myself so installing it in my basement has to be one i can manage by myself. I might be able to handle the weight of the contractor but the PCS is definitely too much for me alone. Noise and dust collection are a downsides to contractor saw but i dont see any other way i can manage it.

I'd like to thank everyone for all the suggestions and advice. My decision was to go with the sawstop pcs. Of course that lead to a dust collector uograde! I choose Oneida's minigorilla. Everything is now delivered, assembled, calibrated and up and running in my  shop. I want to give a special shout out to the folks at Woodcraft Woburn. Without their patience and assistance i couldn't have made it happen. I learned a lot from this upgrade project which I would be happy to share with anyone interested. The two biggest hurdles were electrical and the move into my workshop.