Quoted from JMK:Owned a huo IM and really enjoyed it. Sold it after about a year- just found it a bit repetitive. Purchased a huo SM a few years back- unlikely it will ever leave the collection. Has awesome flow, rules and just simply a blast to play.
Both great games- but I'd put SM on top.
I agree with this. SM has a deeper ruleset and more interesting layout. 3 flippers beats 2.
Both are great games. If you are good with buying and selling then pick the one that feels better now and trade out later if you think you prefer the other. Value holds on both of these.