SteadyEddy

I am about to purchase my first scope and am going for a 200p with EQ5. I dont have funds to go for a pro mount yet but aim to do a SynScan upgrade later. So two things: Would you suggest going for a 150p with EQ3 pro instead so I have goto straightaway? Bearing in mind I will probably wish to do some imaging - I have been advised that doing a SynScan upgrade uses stepper motors that are not the same as a factory PRO mount and this may restrict (deep sky) in future. Should I worry about this? Ed (Newbie)