If you've played a fair number of SNG/STT & you have a solid understanding of the game (ie. learning good shove/fold play w ICM is crucial... amongst other things too obv). Yes it's tough to build a roll in the STT/SNG (regardless of what others say.... it 'used to be easy'..but these days not always so easy... many of the players (even micro players) are familiar with SNG play & then on top of that as I'm sure you know, one can run bad (get it in good & get donked on multiple occassions). It can be frustrating... & to even play break-even is decent imo.
Anyways... 'IF', you feel you have a decent 9plyr. SNG game, try playing the 27player sngs'. You get a field of players who I'd say 2/3 or more of them are losing players (1/2 the field in a $5-27 are total donks)... with maybe 5 or 6 solid players (who are actually making a good ROI in them (ROI+20-30% is not uncommon for 27plyr. regs., whereas ROI+5-10% is good in the 9man sng's).
The 27's are a good bankroll builder imo (I'm referring to Fulltilt here.... not sure where you're playing?).
If you're playing on Bodog, I think it's alot easier to have a decent winrate there in the 9mans if you put some time into studying the game (players are generally much weaker on Bodog compared with Fulltilt... in the $2-$5 buyins anyways).
As far as MTT's go... MTT's have the highest variance of all games. Sure you might be able to be super tight and make it ITM fairly frequently (in micros it's common for players to be ITM 25% or more) but the thing is, alot of those ITM cashes are only going to be min-cashes where you're playing for 4hrs. and come away with maybe 1.5x your buyin (if you're lucky... other times it's 5hrs. for mere pennies... ie. in a 5,000 player field on Pokerstars you could play for 4-5hrs. get ITM in a $5 mtt and only win $7 (or less)). Even 40th pays minimally. With MTT's it the occassional deeprun that covers the buyins for all of the others. Decent MTT regs. who play ALOT of tourneys (20 or more per day... some of them ALOT more) are usually only ITM 9-11% and will often go 50+ tourneys without a decent cash... HUGE downswings are the norm. THey suggest you have at least 100buyins in your roll for the level you wish to play at ($10,000 if you're playing $100 buyins,... $500 if it's $5's, etc.). In the micros you can probably get away with 50buyins (because you'll be ITM more often).
More on MTT play:
In mtts you'll often be doing great, nearing bubble on say a 40-50bb stack.. then you might pick up a monster, MP raises... aggrotard 3bets in CO.. you 4bet with AA/KK.. he 5bet shoves & it's obv a snapcall. BOOM.. your 80/20 gets donked when his 10-10 flops a '10' and you're out... bink.. 'gg'.
Stuff similiar to this is common
Brad Booth - > "Like a fight... it's not how you start, it's how you finish"