In your own opinions, which tubes would be the best replacement tubes for the 400+ I just purchased. I can get the Mesa/Boogie high end tubes, which are Svetlanas, or I can go with JJ/Tesla from Eurotubes. Or I can go with just about anything from tubdepot.com or Lord Valve or whatnot... the question is which tube will give me the best balance of mids, plenty of low end and smooth, not overly present highs. The guy from M/B said their Svetlanas are really good with lots of bottom and not a ton of highs which sounds nice, but they're also really expensive and I recall reading somewhere that they're not the most reliable tube. Anyways, just looking for opinions and testimonials my brothers and sistas. Enjoy the workday, take er easy.