Pilot Color Eno 8-Color vs Uni Propus Window Highlighter 5-Color Review: The UK's Best Colour Writing Tools 2026

Colour transforms note-taking from a passive activity into an active, organised system. In this review, we compare two outstanding colour writing tools: the Pilot Color Eno 0.7mm 8-Color Mechanical Pencil Set, a set of coloured mechanical pencils that brings the precision of a mechanical pencil to colour note-taking, and the Uni Propus Window Quick Dry Highlighter 5-Color Set, a set of double-ended highlighters with a unique window tip that lets you see exactly where you’re highlighting. Both are available from TTPEN UK.

Pilot Color Eno 8-Color — Coloured Mechanical Pencils for Precise Note-Taking

The PILOT Color Eno 0.7mm Automatic Mechanical Pencil 8 Color Set is a revolutionary approach to colour note-taking. At £16.00 for eight colours, it provides coloured leads in a mechanical pencil format — combining the precision and consistency of a mechanical pencil with the colour variety of coloured pencils.

Coloured Mechanical Pencil Leads

The Color Eno uses specially formulated coloured leads that are erasable — unlike conventional coloured pencils, the Color Eno’s marks can be erased with a standard eraser. This makes it ideal for note-taking, planning, and any application where you want the flexibility to correct or revise your colour annotations. The 0.7mm lead size provides a bold, clearly visible colour mark that is easy to read at a glance.

Eight Colours for Complete Organisation

The eight-colour set provides a comprehensive palette for colour-coded note-taking and organisation. Each colour is distinct and vibrant, making it easy to create a clear, visually organised note-taking system. The mechanical pencil format ensures consistent line width throughout the life of the lead, unlike conventional coloured pencils that become blunter with use.

Price: £16.00 (8-colour set) — Buy the Pilot Color Eno 8-Color at TTPEN UK

Uni Propus Window — The Highlighter That Lets You See Where You’re Highlighting

The Uni Propus Window Quick Dry Highlighter Pen Set 5 Colors solves one of the most common frustrations with highlighting: not being able to see exactly where the highlighter tip is relative to the text. At £14.00 for five colours, its unique window tip design allows you to see through the tip to the text below, ensuring precise, accurate highlighting every time.

The Window Tip Innovation

The Propus Window’s transparent window tip is a simple but brilliant innovation. By making the tip transparent, Uni allows you to see exactly where the highlighter will mark before you commit to the stroke. This eliminates the common problem of highlighting too much or too little text, or accidentally highlighting the wrong line. The result is cleaner, more precise highlighting with less waste.

Quick-Dry Ink

The Propus Window’s quick-dry ink formula minimises smearing when used with gel pens, ballpoints, and fountain pens — a significant practical advantage for left-handed writers and anyone who works quickly. The five-colour set provides a comprehensive highlighting palette for multi-level note organisation.

Price: £14.00 (5-colour set) — Buy the Uni Propus Window 5-Color at TTPEN UK

Side-by-Side Comparison

Final Verdict

The Color Eno wins on erasable coloured leads and mechanical pencil precision; the Propus Window wins on the innovative window tip and quick-dry highlighting. Both earn our highest recommendation for UK students and note-takers. Visit TTPEN UK today.