"software. probably budget of around 300. as far as sound goes im not exactly sure yet"
300$ gives you a lot of options.
Some of the most popular ones that don't have too wild of an interface would be:
DCAM Synth Squad - 250$ (Technically 3 synths, but whatevs),
Sylenth1 - 180~$,
Massive - 200$,
Predator - 180$,
ACE - 80-90ish$,
Korg Legacy Analog Edition (again, a bundle of synths, technically) - 200$ or 50$ for each individually.
Those are the more "universally praised" ones off the top of my head with fairly straight forward interfaces.
Try demos and pick the one you prefer. Alternatively, check out places like kvraudio.com for an even bigger list and try more demos.