What’s the consensus on levelling 4s? Is it worth sinking all my iso into my 553 Hulkbuster, or should I bring another, like my 335 Jean, up at the same time?
I’ve got 4 x 5 at 255, Hulk is my highest 3* at 184, Hulkbuster is currently at 197 and Jean at 188. 454 Fury, 253 Thor and 533 WXF all sitting at 182.
Also, when bringing my first character(s) up, is there any real difference between bringing them up as the iso drips in vs saving up and splurging?
If you have Ironfist maxed out, I would go ahead and bring up hulkbuster. Those two can get you to 1K pretty easily in PVP. Then you can focus your resources on bringing up those other 4*s like Jean. That is what I did and it worked pretty well.
madok answered your first question just as I would have. As for the second, I wouldn’t wait to do it all at once. That last 20 levels from 250-270 is very expensive and could take a little while. No reason for him to be sitting down at 197 when he could be at 250.