I am trying to not have to worry about the delay in Mt. Gox's SEPA transfer, and perhaps Liberty Reserve purchase through another exchange may be easier
Use LIberty Reserve through an exchange as the last resort. If you have a method of getting funds to an bitcoin exchange without having to route it through LIberty Reserve, the end result will likely be less expensive.
I would like to try depositing some CAD or USD or EURO
Generally, an individual generally only has one of those. For instance, if you life in the U.S., you generally aren't interested in depositing some EUR.
Take a look here, and if you still have questions, feel free to ask.