Glen Spey 23 Year Old 1991 (cask 800794) - Dimensions (Duncan Taylor) vs Rock Island 21 Year Old
Side-by-side comparison — price, ABV, scores, tasting notes, pros & cons.

Glen Spey 23 Year Old 1991 (cask 800794) - Dimensions (Duncan Taylor)
Glen Spey
£120

Rock Island 21 Year Old
Rock Island
★ 5.00
£100
| Glen Spey 23 Year Old 1991 (cask 800794) - Dimensions (Duncan Taylor) | Rock Island 21 Year Old | |
|---|---|---|
| Distillery | Glen Spey | Rock Island |
| Region | Speyside | — |
| Country | Scotland | Scotland |
| Type | Single Malt | Blended Malt |
| ABV | 53.6% | 46.8% |
| Age | 23 yr | 21 yr |
| Price | £120.19 | £99.62 |
| Rating | — | 5.00/5 |
Glen Spey 23 Year Old 1991 (cask 800794) - Dimensions (Duncan Taylor)
Rock Island 21 Year Old
Glen Spey 23 Year Old 1991 (cask 800794) - Dimensions (Duncan Taylor)
Rock Island 21 Year Old
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 £120.
For beginners: Rock Island 21 Year Old is more approachable (65/100 beginner score).
Glen Spey 23 Year Old 1991 (cask 800794) - Dimensions (Duncan Taylor)
Pros
- +Longer maturation (23 vs 21 years)
- +Rich oak and wood spice complexity
Cons
- −High ABV (53.6%) — may need water
- −More expensive (£120.19 vs £99.62)
- −Lower community rating (0.0 vs 5.0)
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
Who should buy Glen?
Glen Spey 23 Year Old 1991 (cask 800794) - Dimensions (Duncan Taylor) 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.
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.
Tasting notes
Both taste of
Only Glen Spey 23 Year Old 1991 (cask 800794) - Dimensions (Duncan Taylor)
Only Rock Island 21 Year Old