Any model other than the Cutlass. The Cutlass is the model that sounds closest to your Strat.
Maybe a Stingray for a LP type sound
With no budget you should think hard about whether you need anything other than your Strat. Maybe a pedal to get your LP type sounds.
You want the BFR Morse.
This one:
Ball Family Reserve | Ernie Ball Music Man
or this one:
Ball Family Reserve | Ernie Ball Music Man