What is the recommended method of loop prevention for EXOS and EOS at the user port?  STP + SpanGuard?
Edit:  I may have an answer in ELRP it seems.  I'd still like some opinions, though.  I'm not against running a no-STP network (since that is what I inherited), but I need good options to prevent user loops and uplink loops/link convergence.  
Like I said, right now we're a mixed bag of EOS and EXOS running mostly S and K series on the EOS side (all other EOS will be replaced) and X440, X450, and X460 (all G2) on the EXOS side.