Thank you Greg and thank you Matt,

One of the hallmarks of FMA is that we try very hard to meet your needs rather than to tell you what you need. To that end, it doesn't make a whit to us if you elect to continue using our modular packs or move to our unitized packs. The connector modules will work fine with either or you might not need for the unitized packs unless you want a real "hummer" like 15S 9.6AH to fly a full scale sailplane!

While I am posting here, let us take the opportunity to remind users of the big unitized packs that you are talking a lot of horsepower, perhaps as much a 5 - 6. Even 5 horse gas enigne will generally stop or break a wood prop if you get your arm in it. A powerful high torque brushless with a plastic prop will go after your arm like a termite gone mad! So be extra careful and always stand behind the prop plane with a good grip on it when you flip that switch.