Hi, I play almost only HEADS UP 5$ but sometimes 2$. I am profitable on these levels. My bankroll is now 100$, I had some downswings because of cashgames 
so now I focus on playin' only HU's. Well, I find a lot od donkeys on the levels 2$ and 5$ NL HUs so sometimes I go and play some 10$ I played two 20$ or today I played one 30$ HEADS UP. Well I won both 20$ and one 30$ heads, won some 10$ and lost some 10$ 
. Well to the point, as my bankroll is only 100$ I cant play only 20$ or 30$ or more buy in HEADS UP because of the management. BUT I find it easier to win a 10$ or 20$ HU then to win a 5$ HU where the donkeys play and they draw on me. So what you think guys? Should Iplay 2$ and 5$ HUs untill I reach (say 500$ ?) or should I risk it and play the higher limit?
I do have a lot of confidence in my HEADS UP play. My longest winning streak on 5$ and 2$ levels was 17 matches won. So, I do think this means that I can beat those levels if I do not play against donkeys!
comment please!
gl at the tables
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I used to play above my BR on full tilt sit n go tourneys. I had a streak of great luck and made a nice BR of $1600, and then lost it all because I kept playing above it. My advice is keep grinding it out. You can take shots at the $10 level, and if you loose go back to 5 and keep grinding.
I think that you should really always play within your bankroll. and with only $100 I would say not to risk moving up until you have built up your money more. Its good that you have chosen to stick to HU as this is obviously where your strength is and you enjoy playing, and I'm sure once you have built your money up more you will be able to play successfully at the higher limit.
You really answered your own question by saying "should I risk it and play higher levels" - the word "risk" being the important one. The reason players usually go broke playing at too high a level is not because they are not good enough players, but because they do not have a big enough bankroll to take the inevitable swings of playing at that size. Moving up too soon, is exactly that, a risk, and you may be lucky and survive with your bankroll intact but you are more likely to go broke by playing too big, too soon.
babooo (who also answered your post) is right to say keep grinding it out!!
Good Luck at the Tables.
NutsNathan PokerRoomSchool, ProCoaching Team.
Hi eyezy,
//So, I do think this means that I can beat those levels if I do not play against donkeys!
I can't see a problem here? To play against so-called donkeys or bad players is exactly what we want! Because if you play against this kind of players, you can win much more money and in an easier way as if you play against better players. Of course you may get some suckouts or bad beats, but in the longterm you will win much money from this guys!
Especially the $2 and $5 Heads-Up-Level is very easy to beat, because the players there aren't the best. So its a perfect spot for you to build a nice bankroll.
You should everytime play with strict bankrollmanagement to avoid getting broke. So I think, with a bankroll of $100 you can play the $5. Have a great time and good luck at the tables!
MisterSteele
PokerRoomSchool Coaching Team