The question to ask is what your intentions are each season?

Are you in the cups, or have you already been knocked out?

For me, at level 23, as I have still got a fair way to go until I am top of my server, I think using a lot of tokens on scout players isn't the best way to go. I could buy 22 scouts costing 1100 tokens, yet someone a few levels above me will be able to pick up better players on the market for less than 100 tokens - it just seems a bit silly. Once you get to the top of your server I think there is more merit to buy scouts as they will be some of the best players in the game - but even then I'd be wanting to go for the youngest ones and only if they were close to being 7 star.

The question is what you want from each season? You can easily promote and finish in the top 4 (thus giving you CL the year after) without ever having scout players. I have won more leagues than come 2nd/3rd or 4th and I very rarely bother with scouts. The cups seem to be the issue. People start to strengthen their team midway through the season when out of the cups, which to me is a waste as your scout will be back to 5 star by the time he gets to play a cup game in this situation.

Obviously if your goal is to win everything every season then scouts or power training non stop is going to be the way to go, but that will be very cost effective as far as Tokens go.

I personally like knowing I have a small arsenal of tokens and packs ready for when I hit the top of my server - and then I will go all out to have the best team going. There are several at my level that seem to be using loads of tokens each season (there is a guy who has 22 scouts a season - then replaces them at the start of every new season - that must be costing him a fortune!) - but they are still at my level as we only get promoted once per season regardless of how good the team is. He's won 2 more CL and 1 more Cup than me in the 23 seasons to date we have played - but that has obviously come at a huge cost to him financially (or he is spending ALL his time farming to be competitive).

I'd say save your tokens, buy high 5 stars and work on a system of trying to have more tokens on the first day of the new season than you did on the first day of the last - then really go for it when you hit the top of the server.