the only difference between the 130 and 330 is the memory stick... I wasnt impressed with the quality of that. $599 vs $799 last time i looked, so i would sink the extra $200 in computer stuff. Editing the video seems to really eat up copmuter power.
Compusa had the 120 on sale a few weeks back,$599, well they ran out of them on the first day of the sale and they gave me the 330 at the 120 price so i really shouldnt bitch much about it. Sorry I dont have info on the trv-20 or 30, i stopped looking after i got the 330, just in case i made a mistake.
Andy