Perhaps I just don't understand why someone would have others narrow down their list of possible amps, but isn't buying an amp a very personal thing since tone is such a personal thing. I mean sure, it's ok to ask, but I'm assuming you know what sounds you like and don't like, if you like artists that tend to use a Peavey 5150/6505 type sound and that's what you are after then buy the 6505, if you want a rectifier sound - buy the rectifier, if you like the sound of the Coreblade... well you get the drift. It's not like those three amps sound similar and it's a matter of choosing which one meets your desire (say like choosing from three British voiced Marshall type amps), these all sound pretty distinctly different to my ears.
Just one of those things I find funny - sorry for the quasi rantish feel. I don't get asking others to "help me choose". Asking for advice on which amp will get me a particular sound? I get that. The problem with asking for opinions on amps is you are never going to get a consensus - it's a loaded question with so much personal bias it's not even funny.
Man up and pick the amp that speaks to you as an artist - not the amp that speaks to me (if it was me I'd probably buy a Rectifier because I prefer the recto tone over that of the Peavey line of amps, but that's just MY opinion, since you asked for it
.)
And yes, I'm just busting your balls a little bit, but I do find these to be funny questions.
Rock on my friend, rock on!