Im also getting back into the hobby now, but have been using MARATHON canisters and they seem to work pretty fine. I must admit, after reading these posts Im thinking of getting a EHEIM instead.
I agree with the comments on aquaclear and eheim filters. Very reliable. I wouldn't use anything else.
Reliable stuff in my experience:
AquaClear 500, 300
Eheim 2217, 2213 canister filters
Ebo-jager heaters
All-glass fluorescent light fixtures and light bulbs
Not so reliable:
Hydor Theo heaters (bought these when ebo-jagers weren't available from Pet Solutions, and they all ran 5-10 degree too hot. terrible)
i have a eheim 2034 that has been running since 1987. It always makes me laugh how people say how eheims are over priced and so on meanwhile the one common thread in this post is how many eheims are mentioned. yes I am a major eheim fanatic but if i figured out how many filters i would have gone through on that tank of lesser priced brands i am way ahead with the higher initial price of the eheim.