If you are looking for more convenient syphon filters then Hario syphon paper filter replacements are a great alternative. It requires a filter adapter to be used. Easy to use, disposable and maintenance-free, the paper filter is very widely used.
The Hario siphon paper filters can be used on Technica TCA-2, TCA-3, TCA-5 and Next NXA-5 syphon devices. Each pack contains 100 paper sheets.