update...
tried again with comtrend this afternoon. modem side swapped 2 sockets, both totally cmi. picture not appearing at all. forever stuck at the mio tv splash screen.
connect via cable direct, flawless. HD5 no problem.
heck, went to sls to find the aztech one. my friend was telling me his aztech 110E and EW is working very well compared to the singtel one (duno his is which one. probably comtrend also).
everywhere only got 110E and EW, dun have the 109EP. i need the a/c bypass cos not enough sockets. in the end managed to find at mediapro. bought 2 x 109EP. came back and tested. perfect! no hiccup at all so far. and HD5 is perfect too!
stupid comtrend. gonna call singtel tomw see whether they can take back and stop charging me $5/mth or not.