HPI 5b. Help with a possible trade for one.

[Gee]

I've had one on my list of rc to get. With the price of a new one where it is at I haven't done a lot of research on them yet. Figured it was down the road a ways. It turns out I may have a chance to do some trading for one. The new e-revo I have with the twin titans doesn't seem like a trade that would be fair. Would probaly need to do a brushless setup on the e-revo to make it a better trade. What do you guys think? I usually do a lot of homework on an rc before I set my sight on search for a trade or buy one outright. Caught off guard on this deal. Would the addition of a MM 4s setup with a feigoa be close or the same with a Neu motor. More? Less? I will stall so I can get some of your opinions. Thanks again fellows.