Rog, chec out AcesGold for NFL side parlays Fridays. Those 10 teamers would pay 1023-1 there, on sides. I thought most only paid 500-1 on 10 teamers, but I rarely play more than 3 teams so I don't pay attention to them usually.
My best "spread" parlay was at AG last year, a 7 teamer ( 8 reduced by one push ) which paid 127-1 ( true odds ).
I have hit two >400-1 golf parlays at SIA, on $5 bets though, but those are my biggest scores ( odds-wise ).
About 15 yrs ago I played a 10 teamer on college hoops at IP, my first >2 team parlay bet ever. The first 9 came home and I didn't realize it until the 10th was almost over. DPL +1 and they were up 6 with < min left. Lost by 3 in OT, DAMN! Paid 50-1 consolation but I was sleeping on the "layoff" possibility.
GL2All