BBR shavette ?? I believe your talking about the Bluebeards Revenge shavette right?? well this shavette is the same design as the Parker SR1 shavette and if your looking for some extra weight get the Parker SRX Heavy Duty shavette or the Irving Barber Company (IBC) shavette
The Gillette 7 O'Clock Yellow Sharp Edge is alright which I can get about 4 or 5 shaves (YMMV) only with the Merkur 34C, my only favorite DE blades are Astra SP, German Wilkinson Sword, Gillette Silver Blue, Perma-Sharp Super, Polsilver Super Iridium, Vintage Polsilver Stainless & Voskhod.
However I don't have just a Merkur 34C razor, I have a complete collection of Safety Razors and Shavettes:-
EJ DE89 Extra Grip Knurled
Fatip Piccolo Nickel
Fatip Grande Nickel
Feather Artist Club DX Shavette (folding & non-folding)
Feather Artist Club SS Shavette (folding & non-folding)
Fine Superlight Slant (travel razor)
Gillette Fatboy Adjustable G2 1961
Gillette New Long Comb 1930
iKon X3 Slant with The Stray Whisker "Howitzer" Handle
Irving Barber Company (IBC) Shavette
Kai Captain Standard DX Shavette (folding & non-folding)
Maggard Razors v2.0 Open Comb with a MR5 Handle
Merkur 23C
Merkur 33C
Merkur 34C
Merkur 1904/41C Open Comb
Muhle R41 v2013 with a MR5 Handle
Muhle R89 with a Weber Razor Classic Handle
Parker Variant Adjustable in Satin Chrome
Phoenix Double Open Comb
RazoRock German 37 Slant
RazoRock Mentor
Razorock Mission
RazoRock Old Type Open Comb
RazoRock Quick-Change (travel razor)
RazoRock Wunderbar Slant
Rockwell 6s
Standard Razor
The Bluebeards Revenge 'Cutlass' Double-Edge
Viking Blade The Chieftain (travel razor)
Rockwell Model T - waiting for my order to arrived around May 2017 shipping & still under project design development until further notices.
Rockwell 6C - waiting for my order to arrived around April or May 2017 shipping until further notices