Board Thread:Questions and Answers/@comment-26918950-20150823053914

I'm fairly new to the game, but took advantage of the half price vortex to move ahead quickly. Now I have a collection of units, and am not certain if I am using them to greatest advantage or not. Here are the rare units I have:

Name. Stars. Level. Cost.

Aqua Slash Tazer. 6.        100.     29

Thief God Zelnite. 6.        100.     27

Rumbling Cutlass Diana. 6.        100.     29

Holy Blades Sefia. 6.         100.    24

Inferno Swords Logan. 6.         100.    24

Devastation Queen Feeva 6. 100.    29

Holy Defender Rinon. 6.          100.   29

Hell Keep Alice. 6.           94.    22

Supreme Militant Raaga. 6.            1.     29

Penta Blade Zergel           5. 80.   18

Head Engineer Garnan. 5.            80.    17

Semira. 4.            29.    13

Dark Keeper Iidor. 4.            17.    13

Inferno Elza. 4.            1.      13

Hadaron. 4.            1.      13

Dragoon Elder Bargas. 4.            1.      13

Gunner Douglas. 3.            1.       5

My current max cost is 139. The first 5 are my current party, with Logan as leader. The first 7 have their SBB activated and at least partially trained. I have a decent number of metal keys, so I can train up any of the others fairly quickly. Eventually I want an all 7 star team, of course, but so far some of the maxed 6 stars have seemed stronger. I'd like to hear from some experienced folks. Given those units, what team would you be running with what leader, and which of the lower level units should I be training as replacements? 