I tell you why Bales a great buy for us. Fear factor. The lad can play either wing and has one of the best strikes in world football, like a homing missile when it leaves his left foot.
We all know it qualities but what nobody has said is the most obvious. He will frighten opposition and they will naturally leave space for other players in the defensive positioning aspect. You let him run and he will either score or create, you have to track him and it takes numerous players out the game in the process. Silva, Aguero etc would be in space they've not seen this season. We all saw what affect Messi had on PSG just from his presence, Bale is similar in this respect.
If I were in charge of the club I'd go for him over any other. Cavani and Falcao included.