It appears that the model shown here is an E, so I'll comment on that premise. The Type E IMHO is an aggressive injector compared to a G, I or J.
However, once you get the angle down pat, it's one of the closest shaves with little to no irritation. Let's start for the top:
Price - one can still be had in very nice condition for around $10 - 15 shipped CONUS
Quality - For its time they were well made although some might disagree because the Bakelite handles are inherently fragile but to me that speaks more to the material available at the time then to its quality.
User Friendly - In my opinion injectors are easier to use because their heads are already at an angle that for most everyone makes the blade lie flat on your skin. One word of caution, if you're a longtime DE user, muscle memory will make it necessary for you to make adjustments in the angle until you get the hang of it. Again, just my opinion.
Grip - This to me depends on many things, hand size for one. The model shown here has a smooth Bakelite handle, whatever the size of your hands, if you try to grip it and hold on to it with wet soapy hands, you'll have some trouble otherwise I find the size and shape of the handle perfect for me.
Ease of Blade Replacement - What can I say that hasn't already been said. The injector concept makes changing the blade a snap provided you are using a cartridge with a metal key. Current injectors with the plastic key take a little practice until you get it right but ifyou get a hold of some Schick NOS blades from the 1970's without having to mortgage the house or current production Schick injector blades, you're "in like Flint". Anyone who tries cutting a DE blade in half and making it fit into an injector IMHO is asking for serious injury.
Aggressiveness - As I said at the beginning, the Type E is aggressive but not in a bad way. Practice makes for better shaves.
Adjustability - n/a
Balance - Perfect but don't expect it to feel like a Gillette New Deluxe or British Aristocrat, that would be an apple to orange comparison. This is a totally different animal.
Final comments: Previously mentioned was that they are hard to clean; yes, unless it is an early model where the curved spring under the head was actually meent to swing left so the head opens or the later Hydro-Magic that has a lever that you flip up and it exposes the inside of the head.
There you have it, my opinion.
Mike
However, once you get the angle down pat, it's one of the closest shaves with little to no irritation. Let's start for the top:
Price - one can still be had in very nice condition for around $10 - 15 shipped CONUS
Quality - For its time they were well made although some might disagree because the Bakelite handles are inherently fragile but to me that speaks more to the material available at the time then to its quality.
User Friendly - In my opinion injectors are easier to use because their heads are already at an angle that for most everyone makes the blade lie flat on your skin. One word of caution, if you're a longtime DE user, muscle memory will make it necessary for you to make adjustments in the angle until you get the hang of it. Again, just my opinion.
Grip - This to me depends on many things, hand size for one. The model shown here has a smooth Bakelite handle, whatever the size of your hands, if you try to grip it and hold on to it with wet soapy hands, you'll have some trouble otherwise I find the size and shape of the handle perfect for me.
Ease of Blade Replacement - What can I say that hasn't already been said. The injector concept makes changing the blade a snap provided you are using a cartridge with a metal key. Current injectors with the plastic key take a little practice until you get it right but ifyou get a hold of some Schick NOS blades from the 1970's without having to mortgage the house or current production Schick injector blades, you're "in like Flint". Anyone who tries cutting a DE blade in half and making it fit into an injector IMHO is asking for serious injury.
Aggressiveness - As I said at the beginning, the Type E is aggressive but not in a bad way. Practice makes for better shaves.
Adjustability - n/a
Balance - Perfect but don't expect it to feel like a Gillette New Deluxe or British Aristocrat, that would be an apple to orange comparison. This is a totally different animal.
Final comments: Previously mentioned was that they are hard to clean; yes, unless it is an early model where the curved spring under the head was actually meent to swing left so the head opens or the later Hydro-Magic that has a lever that you flip up and it exposes the inside of the head.
There you have it, my opinion.
Mike