open ended str8 flush draw

[johnsy]

Live Hollywood Park 5-10 400.....utg is unknown. Button is a quite improved player as of late(relativley TAG). I have LAG image. 4 Limpers to me in the cutoff i limp w/ 8s5s(1400 i have all covered). Button calls as do the blinds. Flop 6s7s10h. Utg bets 80 i raise to 280 button calls as does the bettor. Turn is 3d. UTG checks, i check????? button moves all in for 430. Utg calls as do i. Flame away...........