Ordered a Splawn Nitro. Trying to decide between EL34b or KT88. Love the QR HR Marshall tone. First order thought is EL34b to entertain classic Marshall tone. Is this valid? Can the KT88's deliver this tone as well as the extra gain/headroom? Most seem pretty happy with the KT88's. Need expert opinions please. Meanwhile, trying not to cover too much of the same territory as the XTC red channel.