It's all funny money in the end. Synch will hand you the world if you ask and if you do somethig silly like go from 5% utilization to 60% in a billing cycle then they'll shut you down. You've already taken Diversification 202 and spread your self amoung other lenders to safeguard against something like Synch shutting things down.
Do you actually use them on a regular basis or are they just there for fluff?
I pushed them on Sam's to 25K and haven't used it since the call a couple of years ago now.
Looking at your signature on here though you're stuck in a rutt in the $2-$5K range except for Synch which is about par for the course. It's time to tackle some of the other lenders then and CLI the hell out of them if possible to shore up your fluff power.
This game is all about being able to see you be able to manage a higher limit card properly. Lenders don't like to be the first to go to 5K/10K/15K/20K and so on. Once one does it throws you into a different bucket for scoring. It's funny how it happens to one card and then they all want to jump on board to match or beat each other to the top of the pile.
Personally I wouldn't want to concentrate my available credit with a single lender either. Especially one that's known to be a little loopy at times. It takes a little bit of time, persistence, and planning to figure out how to move forward from here. Your situation though it does make sense to go for a CLI even if they want a HP just to balance things out a bit.
