i got one of these for my tank because I couldn't stand debris on my substrate. Its a little battery operated gravel vac with a sock looking thing that catches the stuff and the water goes back in the tank. worked great for me! substrate cleaning without taking out the buckets is awesome
Electrical Aquarium Battery Fish Tank Vacuum Gravel Cleaner Hose | eBay
Cons: Its cheap, plastic hook broke on mine the day i got it so expect it to eventually break. Also if you have sand as substrate it will eventually clog the motor if you dont clean it, cutting its life significantly. In my sand tank, after a couple months I had to beat the thing senseless to work.
Pros: Quick tank clean up (took 2 minutes tops for my 55), Vacuuming without water changing, No heavy bucket lifting. Came with multiple attachments (Algae scrapper and such, i just used mine with no attachments for precision vacuuming), Easy clean up...
All in all, even with a sand substrate mine lasted at least 4 months and when that broke I got another. I cant imagine using the siphon for small time clean up anymore. $10 free shipping I got what I was looking for...
Edit: I guess it starts a siphon too, never tried myself...