Just about all canna-targeted base nutrients from reputable canna-oriented nutrient companies should be 'good' to start with. I've been using both MegaCrop and Adv. Nutr. pH Perfect Connoisseur Coco A&B, and consider both to do a comparably good job. From there, you can start to think about supplements.
AN base nutes are very expensive compared to MegaCrop. But the AN base nutes, even the top-end Connoisseur product line, are rather competitively priced with other 2-part products, including considering that you'll likely be feeding in the ≥2 mL/L range vs the instructions saying 4 mL/L.