For $1300, I'd recommend checking out some Riveras. For that money, you could get several new models and on the used side, you could probably find some nice heads or the larger combos. Heck, one of the older but versatile M/S series amps is easily under $1300 and you'll have a ton of flexibility, if that's what you seek.
But if you are seeking ultimate plexi-style tones for that rock or blues/rock sound, it's hard to beat a good plexi copy. $1300 is on the cusp of getting a good-quality 50-watt head from someone like RJS Ampification, but you could likely find a good used plexi-style amp for $1300. Add an ABY switch and you can have essentially 3 separate tones from a 6-knob plexi.
Good luck to you.