The Bic is lightweight and gives a good idiot proof shave. The injector is a little heavier.
The injector has more mass to it and it is easier to cut yourself; but it is just as intuitive. Just remember to go easier on the pressure. Changing blades is fun with the injector. The injector cleans easier than the Bic. I have been using the ASR blades with the Injector. They seem more rough than the Schicks.
I can keep the Bic in the bathroom, and I do not have to worry about it rusting. It is good for a quick, hassle free shave.
I find the Bic Sensitive shave to be very similar to the Schick injector shave. If you like one, I think you would like the other. I prefer my Schick for the reasons stated above, and I just can't get as attached to a disposable. I buy Schick-brand blades through Amazon, and like them.
Rav, Injectors are in fact a single edge blade and also the steel is a thicker stock than a DE blade making the feel somewhat different. For me they tend to plow though some of the thicker areas of stubble that usually require a bit of blade buffing whit a DE.