MM210 is what's in my garage.Has a couple cool features and will do anything you want to do on a vehicle.I suppose that if you are used to the smaller machines,this one might be considered a pain to move around,but I like it just fine
.I will say this though,if you are debating between the 210 and the 251,go with the 251 without question.Money was the deciding factor for me but the 251 has alot of cool features that the 210 lacks.
I agree with an autodark helmet,especially for those just learning (but are serious about it).I'm one of the tools that spent the extra on the flamed helmet....it was on sale what could I do?
__________________
'72 C-10 Proud owner of a million new and used pieces that used to be and will once again be(god willing) a testament to the term "they don't build em like that anymore. 
'80 LWB 2wd beater
'67 GMC long fleet (cab donor)
'66 long step (parked till it's turn comes around)
'65 short step (parts truck that will donate it's bed and possibly frame to the '66)
'06 Grand Prix wife's car (she hardly lets me touch it)
my pics