Re: Tube screamers
I love the OCD as a standalone overdrive, I'm not a fan of it as a boost. Fulltone's stuff tends to have a looser woofy low-end that can make things muddy. Especially with Rectos, those things really need a TS to keep them tight. It might work well with OP's 6505. Though a lot of people boost with OCDs and seem to love it. I've found Klons (or at least clones) do a good job of boosting without any mud, but also without any loss of low end that the Tube Screamers have.
I'm going to throw out Visual Sounds Route 808 out there as another TS option. I've heard nothing but good things, and their redesigned switches are supposed to be very robust. No true bypass, but after a few years of pedal-building, I've come to prefer a good buffer in my pedals if it'll fit.
I love the OCD as a standalone overdrive, I'm not a fan of it as a boost. Fulltone's stuff tends to have a looser woofy low-end that can make things muddy. Especially with Rectos, those things really need a TS to keep them tight. It might work well with OP's 6505. Though a lot of people boost with OCDs and seem to love it. I've found Klons (or at least clones) do a good job of boosting without any mud, but also without any loss of low end that the Tube Screamers have.
I'm going to throw out Visual Sounds Route 808 out there as another TS option. I've heard nothing but good things, and their redesigned switches are supposed to be very robust. No true bypass, but after a few years of pedal-building, I've come to prefer a good buffer in my pedals if it'll fit.