Rock Island 21 Year Old vs Caol Ila 15 Year Old 2007 (cask 4) - Cask Strength Collection (Signatory)
Side-by-side comparison — price, ABV, scores, tasting notes, pros & cons.

Rock Island 21 Year Old
Rock Island
★ 5.00
£100

Caol Ila 15 Year Old 2007 (cask 4) - Cask Strength Collection (Signatory)
Caol Ila
£138
| Rock Island 21 Year Old | Caol Ila 15 Year Old 2007 (cask 4) - Cask Strength Collection (Signatory) | |
|---|---|---|
| Distillery | Rock Island | Caol Ila |
| Region | — | Islay |
| Country | Scotland | Scotland |
| Type | Blended Malt | Single Malt |
| ABV | 46.8% | 58.4% |
| Age | 21 yr | 15 yr |
| Price | £99.62 | £138 |
| Rating | 5.00/5 | — |
Rock Island 21 Year Old
Caol Ila 15 Year Old 2007 (cask 4) - Cask Strength Collection (Signatory)
Rock Island 21 Year Old
Caol Ila 15 Year Old 2007 (cask 4) - Cask Strength Collection (Signatory)
Quick verdict
Rock Island 21 Year Old is rated higher (5.00 vs 0.00).
Rock Island 21 Year Old is better value at £100 vs £138.
For beginners: Rock Island 21 Year Old is more approachable (65/100 beginner score).
Rock Island 21 Year Old
Pros
- +Balanced smoky character without being overwhelming
- +Approachable and beginner-friendly sweetness
- +Better value for money
- +Higher community rating (5.0/5)
Cons
- −Niche style — may not suit all palates
Caol Ila 15 Year Old 2007 (cask 4) - Cask Strength Collection (Signatory)
Pros
- +Balanced smoky character without being overwhelming
- +Vibrant, fresh fruit character
Cons
- −High ABV (58.4%) — may need water
- −More expensive (£138 vs £99.62)
- −Lower community rating (0.0 vs 5.0)
Who should buy Rock?
Rock Island 21 Year Old suits those who enjoy sweet, honeyed, or fruity whiskies. It's accessible for beginners and crowd-pleasing enough for gifts. Fans of approachable Speyside or Irish whiskey will love it.
Who should buy Caol?
Caol Ila 15 Year Old 2007 (cask 4) - Cask Strength Collection (Signatory) is for enthusiasts who appreciate cask-strength intensity. Best enjoyed with a few drops of water to open up the flavours. Not ideal for casual drinking or beginners.
Tasting notes
Both taste of
Only Rock Island 21 Year Old
Only Caol Ila 15 Year Old 2007 (cask 4) - Cask Strength Collection (Signatory)