I more or less maxed out U-123 in my game, it's a IXa out of Lorient. Oktober 1943.
Wondering what to do next with about 8000 renown in the bank, but more or less the same dilemma here where there's versions concerned.
Big plus on the VII(C) is the diving and turning speed. It's a fine boat, especially in the Med, but upgrade to a IX, much more eels
It's sluggish at first, different, but you'll start to love a IX once you've been hunting tankers around the Antilles... But mount a Flak20Vierling or Flak37 too LOL