Your experience with the cheaper Gibsons confirmed my idea about them.
The Sterling is a decent guitar for sure, so is the Yamaha Pacifica 611VFM. In that pricerange you've had a lot of choice like Ibanez's, Jacksons, ESP Ltd, Fender Lonestar, Guild Polara, Reverend, Fret-King Eclat, PRS SE, EVH, Eastwood, Hagstrom Swede etc.
I just wouldn't rush things as you didn't make up your mind what you really want and need.