I'm a lvl 45 plasma. I need suggestions of places to grind
For lvl 52 i know this Badass tip.
For 52-54 I found this awesome place that you can abuse (no ALTS needed) in the Red Map! I think the place is called "Yoseri Lake"or something (Sorry, not on PC to get the picture but I will edit it when I have the Pic)
That place is MOB-RICH, everything gives amazing amounts of EXP, since killing 1group would result in around 7500 EXP per group (Takes less than a minute per group)