Spring and screw type injectors ...

[Texasguy]

I have a lot of experience with cheaper spring type injectors . Is there anyone out there with experience with both styles , that can help explain to me which you think is better ? I'm about to buy my first bridge and injector and I figure that since I have a lot of experience with the spring style , that I should just go with that . Anyone on here have the Delta Kits B150 bridge ?? It seems like a light weight , simple to operate bridge , anyone have any advice ? Would it just be worth the money to buy the B300? And lastly , I know that the common used method of inserting resin into the injector is through the head of the injector , is that because of the special leak resistant seals ? Is it possible to insert the resin from the top of the injector with the delta kits injectors ?? Any advice is greatly appreciated , thanks !!

Texas Guy