theres not really a best choice of these, as its purely down to the players preference of Pokemon characters
From a game play perspective, this issue is notable because it introduced dual-type Pokmon
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Grounded for Life's first ability)
Where prices really spike is when cards appeal to both groups, with a card like Sheoldred, The Apocalypse a prime example being a major player in multiple competitive formats, and a favourite in Commander
Chart shows the price of Mawile V #TG17 at the end of each month going back as long as we have tracked the item.
This deck is still looking for the right build, but it holds a lot of promise