First off Soundwave looks pretty dam good in fact i would go as far to say imo he is much better than the HA, infact i love him looks like one of the best DOTM.
Wheeljack is
but ive have limited myself to new characters in this line so i will buy him any way.
As for the other two badboys
again Sky Shadow from the start for me was an instant must,
some one said before he is better than Thunderwing, TW is nearly if not perfect imo especialy with reprolabels.