BobArsecake said: If you've got the money, a Fender Twin Reverb, or like it's been said, most Fender valve amplifiers. I wouldn't go for a Marshall to compliment your Jaguar.
depends on the marshall you get and the sound you're going for. i wouldn't get an 800 or 900 for a fender, but a dsl, tsl, or a plexi sounds really nice when it's dialed in right.
but i think a fender would be the safest choice. you might even look into orange.