Basics
Both bagged and bagless canister vacuums work the same in eliminating debris from carpet and dust particles, rugs and some fabrics all through the house. The main difference is in the dirt particles collection. Bagged vacuums gather dirt in bags set within an external bag. Bagless canister vacuum cleaners gather dirt in detachable plastic canisters.
Cost
The primary cost for buying either kind of vacuum cleaner is similar. Bagless canister vacuums give the clear benefit of no frequent expenses for bags. Bags for some vacuums aren't too costly but do differ in price, making this a significant area to research before buying any vacuum cleaner that needs bags. External bags also need substitute regularly, so this is different area as well to look in. Bagless canister vacuums need none of these substitutes, but have filters which should be periodically changed and are more costly than bags.
Thoroughness
Maintenance
Bagged vacuums need regular maintenance or repair, replacement of beater bars or unblock the system. Replaceable outer and inner bags make these vacuum cleaners less likely to need major work in long term. Bagless canister vacuums need similar maintenance. The maintenance needs might be more costly as gathering of canisters break or seals wear down and must be replaced.
Use
Consider how frequently you'll utilize your vacuum. If you want to utilize the vacuum rarely in a small home, concerns such as maintenance and emptying might not be much of an problem for you. Those people buying a vacuum to start a cleaning service must be more concerned with these issues as they impact business costs and ease of use.
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