what is the best type of filter i can get

Canister, power, bio-wheel.. witch one offers the best combination of the three types of filtration?

This is my second edit since now i know what kind of fish you have. I agree Aquaclear 20/30 will work best for you. You can always go with emperor (get small size)

to be honest I agree with other answers, I've been researching on which filter suit better for some type of fish, size, etc..

In the past I've owned two 35 gallon tanks but they're no longer with me. (long story)

I have find many filter works good as it is, however, I really love several brands. For smaller tanks 40 gal or under, Aquaclear works better but i'll suggest get one size bigger than the actual recommendation because if you get actual size, the cleaning will require more. For example, I had African Cichlids in 35 Gallon tanks and I use Aquaclear 70 which provide more circulation and keep the water very clean and the cleaning of filter requires once every three weeks. I also use bio-wheel combation with Emperor 400 which provide fresh oxgyened water into the tank which you can hold much more fish than the actual recommendation. If you use the bio-wheel (Emperor or other combations) air pump will not be necessary which I hate the sound from air pump's vibration LOL..

If you have smaller tanks like i say under 40, overhanging filters works best because Canister will overkill (too much)

For big tanks over 40 or 50 gallon I'd recommend use several filters combations like Bio-wheel filters (the filters are expensive but you always can use the Aquaclear's filters to modify your Emperor filters for cheaper. I've been fond of Eheim canister filters, easy to clean (once every few months or 6 months) but the plastic tubes decays easy and breaks easy but easy to replace anyway.