I don't think Cap One gets enough love. I've had an old low limit (5K) Cap One card listed with the old company that has regularly filled it's AU spots for several years now. Easy to add and remove AU's online. Everyone has posted correctly and not a single hint of pushback from Cap One. I opened another one a couple months ago for the nice SUB and to season for tradelines of course.
Yup. I actually actively like the existing CapOne card I have.
The situation I want to avoid is:
1. I have an AU on my existing CapOne card.
2. I apply for a second CapOne card
3. They like my credit history but feel they have enough credit exposure to me, so they approve my second card for $2K but reduce my existing CapOne card's CL by $2K at the same time. I call this "shiftage".
4. CapOne updates the AU's credit report with their new lower-by-$2K limit
5. AU notices, gets upset, calls Old Company
6. Old Company refunds AU and doesn't pay me.
7. Old Company gets annoyed at me and deprioritizes sales on my card or cuts that card from the program or cuts me from the program.
I don't know what the risk of the above is, but it's something I'd rather avoid. OTOH, it might not happen, and I might get a second CapOne card with enough of a CL to season for piggybacking.
So at this point I'm still not sure, but I'll probably apply for them lower down in my priority list, and then watch for shiftage, and try to repair/reverse the damage before step 4 happens.
...
I just looked, and currently I have no slots filled on my Citi or Barclays, but I do have two CapOne AUs on, so I think I may keep the Citi app and replace the CapOne with a Barclays offer. Having no current AUs mitigates the risk of the above problem chain.