it not really a weight thing it a bulk think kinda  I have T4  61 and T5 76 
I am looking at replacing T4 61 with S970  keeping T5 76
T5 is my go to most of the time  
it about a small offering  with speakers  black in color  small footprint for top of piano 
on board speakers will give me a new dimention on the jobs i got to set up 2 times in same place.
I can set up speaker system in one spot go do the alt wing come back and plug in and  play  save me having to set up 2 times ect.
black in color looks better on top of piano in my piano bar gigs i do .
smaller footprint 
when I need to go big I got T5 76 and montage 7 so I got that covered.
I just think having a T5 mini might be something that works  and black in color
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Genos, PSR S970, Fender Tele  Amercian  Deluxe Cherry sunburst , Cubase Pro 8 ,Yamaha A3M Acoustric ,Taylor 814,  Ibenez Artcore Custom Tascam DP 32  Yamaha DXR 10, QSC K-12, K 12 Sub  K 8   Sinn 945
2 Fender Expo line units .