Commercial my friend.
My guess you are looking to build hours and reach the left seat, well in biz you will be flying 300ish hours p/year, meanwhile in commercial for sure over 600hrs.
Biz roster is challenging, too long time away from home, and you are fully dependent on your passenger, there are times you are just sitting in your hotel hoping your client didn't change his mind, or decided to stay few more days there.
The only good thing from the biz is the money, and perhaps you can be commander quicker, problem is trying to switch to commercial later will be harder, because no commercial will give you a direct left seat, so you will need to start over as SFO, that will impact your income, and at this point you are kind of cornered...
Good luck mate!