I suppose I go back and forth between Ibanez and Gibson/Epiphone.
When I started out, I was really into the sound of Slash and Gary Moore, so I got an Epiphone Les Paul.
After a few years I discovered Joe Satriani and Steve Vai and all that, and started playing their music. This demanded a guitar with a tremolo, so I looked around and eventually got an Ibanez RG570CT.
I ended up really loving the tone of that Ibanez, perhaps even more than my Les Paul.
At some point I 'pimped' the Epi by putting in original Gibson pickups and electronics, having the frets recrowned professionally, and having a graphtech nut installed.
Not too much later, the neck pickup on my RG died. I ordered a set of DiMarzio's, but it took a long time for them to arrive. I had already taken the guitar apart in an attempt to fix it (at first I thought the switch was faulty, it had acted up before), and didn't feel like putting it back together before the new pickups arrived.
So I had to play on my Les Paul during that time, and fell in love with the tone and playability all over again.
Since I still needed a guitar with a tremolo, I started looking around for a replacement. I found a Gibson M3 (I have actually been fascinated by that guitar ever since I first saw it... but couldn't find one when I was hunting for a guitar with trem)... Completely loved the tone, playability was great aswell, and the sustain was just... insane... The only thing I didn't really like about it, was that the tremolo didn't go up as far as my RG did.
Anyway, the DiMarzio's finally arrived, but they didn't work out for me. They didn't sound like my stock pickups at all, and I lost that very tone that made me fall in love with that guitar in the first place. So the DiMarzio's went again, and I made it stock again with a cheap secondhand V7. Now it was hard to choose between the M3 and the RG570CT...
Then I saw a special offer for the Ibanez S7320... I had been fascinated by the ZR-tremolo for a while... It looks really slick, and the zero-point system is great. But I didn't want to buy another guitar just because of a tremolo. The 7th string gave this guitar a little something extra that my other guitars didn't have. So I thought I'd buy it and see if 7 strings would work for me... If not, I could sell it again, it wouldn't cost me all that much anyway.
The moment I first played on it in the shop, I noticed that the bigger neck also gives it a bigger tone. I really liked it. It is currently my main guitar, even though I don't actually make use of the low B-string much. I just like how the guitar sounds, and how it plays.
(I'm now looking for an Epiphone Les Paul Classic 7-string actually)
I suppose you know what a Les Paul or S7320 look like, pretty standard... Here are the relatively rare RG570CT and Gibson M3: