I don't always fold it UTG; however, you must know the table where you are playing. If the players are playing loose agressive poker and are all calling stations, I will give it a shot once in awhile, but will fold it if I don't hit something I can work with. The obvious reasons 910s is a better hand is that you have a flush draw and a str8 possibility, but it can be dangerous because often you will get beated by a higher straight. Next if you do choose Q10o from UTG, there are three hands that could have a Q that will beat you when one or both of those last two queens hit on the flop and end up being the top pair, unless you hit your 10 and sometimes even when you do, you are going to spend your stack unless you have the foresight to see that you are out kicked.

I play online for a living and can tell you that more often than not I will always fold Q10 UTG and most of the time play 109s if I can get in for the one bet. My only exception is if I am playing a 6-handed ring game then I tend to play both of them only if I can get in for one bet with the Q10 and two bets with the 109s. I will never call more than 2x the BB with either UTG at a full 6-handed game.

Hope this has helped you out with those two hands.