Injectors

I won't fall in that hole myself, I have one injector, an E3, just so I can say I have one, and it is a great shaver. But I have a lot of great shavers, I'm not gonna go down a new path without reason. I will stick with DE and SE (of the GEM blade type) and my one injector.
 
Get the PAL on BST but don't trust the blades until you know what to expect.
Or get a Schick Type I, J, K, L, M, N. They all mostly shave the same.
(I won't recommend my favourite Type H as a first injector)
Get some Personna blades from Connaught's and if you have problems with the wonky plastic magazines someone will help.
(The blades are good, but I had some magazines that fell apart when injecting a blade. This can be fixed with an empty metal magazine which someone will send you for free)

I'd be happy to own the PAL on BST if I didn't have one already. Handsome razor. Good price.