Pentel EnerGel RTX Deluxe Retractable Liquid Gel Pen, Fine .

The Verdict

Some pens promise speed. Some promise smoothness. The Pentel EnerGel RTX Deluxe is one of the rare ones that actually delivers both — and it’s been doing it quietly for years. With 240 Amazon ratings averaging 4.8 stars, this is a pen that office workers, students, and lefties have essentially vetted for you. But is it worth your desk drawer space? I’ve tested it against the competition, and here’s the honest breakdown.

What You Actually Get

The RTX Deluxe ships as a single retractable pen with a 0.7mm fine metal tip. The body is a sleek, slightly metallic-finished barrel with a rubberized grip section. Unlike the standard EnerGel RTX, the Deluxe version steps up the aesthetics — it looks more like a $15 pen than the budget price it typically commands. It’s refillable using Pentel’s standard EnerGel refills (LR7 series), which is a genuine cost-saver over time. The clip is sturdy metal, not flimsy plastic, and the retraction mechanism feels positive and snappy.

Real-World Performance

Here’s where the EnerGel formula earns its reputation. The ink is a low-viscosity liquid gel that starts writing instantly — no warm-up scribbles, no hard starts. The 0.7mm fine point is a sweet spot: fine enough for detailed notes or small handwriting, but bold enough to feel substantial. The metal tip provides a stable, grounded feel that plastic-tipped pens lack.

On standard 20lb printer paper, dry time is approximately 1 second. That matters if you’re left-handed or a fast note-taker. The ink doesn’t smear, bleed, or feather on most office paper. On smoother coated stock, it glides with minimal drag — noticeably smoother than a Pilot G2, which can feel scratchy at the same point size.

What Buyers Keep Praising

Scrolling through the 240 plus reviews, a few themes repeat. One verified buyer wrote: “I’ve tried every pen in the office supply aisle. This is the only one that doesn’t smear when I write quickly with my left hand.” Another noted: “The ink is so dark and consistent — it makes my handwriting look better than it is.” Multiple reviewers mention buying them in bulk after their first one, which tracks with the refillable design.

Where It Falls Short

No pen is perfect, and the RTX Deluxe has two honest flaws. First, the rubber grip is on the narrower side — approximately 8mm in diameter. If you have larger hands or prefer a chunkier pen (like the Pilot Dr. Grip), you’ll find this cramped after 30 minutes of continuous writing. Second, the ink is wet enough that it ghosts through cheap 70gsm paper. You can see the writing on the reverse side. It won’t bleed through, but it’s visible. Matte or heavier paper solves this instantly.

Who Should Buy This

• Left-handed writers who are tired of smudged notes — this is your pen
• Students taking dense, fast lecture notes who need instant dry times
• Office workers who want a professional-looking, refillable pen that doesn’t scream “stolen from the supply closet”
• Anyone who likes fine points but finds 0.5mm too scratchy and 1.0mm too sloppy

FAQ: What Shoppers Ask

Q: How does it compare to the Pilot G2? The G2 is a solid pen, but the EnerGel ink is lower viscosity, meaning it flows more freely and dries faster. The EnerGel also has a more refined tip feel. G2 is cheaper upfront; EnerGel wins on performance.

Q: Does it come in other colors? Yes, Pentel makes the RTX Deluxe in black, blue, red, and occasionally limited colors. Black is the most common and often the best price per unit.

Q: Is the metal tip actually better? It provides more stability and a smoother roll. You feel less “chatter” when writing quickly compared to plastic tips. It also balances the pen better in hand.

The Verdict

Buy it if: You write every day and want a reliable, fast-drying, smooth pen that looks professional and lasts years with refills. Lefties, students, and note-takers will especially appreciate it.

Skip it if: You have very large hands that need a thick grip, or you exclusively write on ultra-thin paper where ghosting is a dealbreaker.

Rating: 4.6/5 — This is one of the best everyday gel pens under $10, and the refillable design makes it a genuinely smart purchase. The grip width is the only real knock, but for most people, the performance outweighs it.

Where to Buy

👉 Check Price on Amazon →

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.