I would not say I'm a brand loyalist. I have a Ketron, Yamaha, and 2 Korgs. Out of the those keyboards none of them really offer everything I'd really like. If fact on some jobs I bring two keyboards. I could get by with just one (probably the Yamaha) but it would definitely be a compromise.
I know the bored feeling......maybe it's time to change the rig? Sell off gear.. Try something new ..