I like to scramble. Depends on bid and where it was placed. Some germany players will send only 1 sub to sz 106 instead of 2 subs, as insurance for their round 1 attack (mainly because the sub in sz 107 can’t make it).
Rule of thumb, if germany is going 2 subs 1 bship in sz 110 and sending 3 fighter 3 tactical, you need more than 4 hits to cut into germany’s air… it is a bad idea. 2 subs 3 fig 3 tact 1 bomber… okay sure have fun. SZ 111 lately I have been seeing the bship attack that with 2 subs and some air to boot… in which case I say no, I will do sz 110 and pass on sz 111.
Just be aware your UK1 buy goes entirely into london. If your transport is still alive in sz 106, dump the armor and infantry into london immediately if you scrambled in sz 110 to trade air units.
Again it depends on how crazy I am feeling. Also the potential to totally screw Germany over is there and so is the loss of london, any sz 110 scramble is high risk and high reward. If Germany goes light, then go hard, it sets the tone for the rest of the game If you are crazy like me, I suggest your bid be directed in the medit sea or somewhere in africa.