It's distinguished that you're considering both the Gibson Les Paul Standard and the Eastman SB59. Both guitars have their strengths, but they cater to slightly different preferences and budgets.
The Gibson Les Paul Standard is iconic, known for its rich, powerful sound and substantial resale value due to the brand prestige. If you're looking for a guitar with a proven track record in both professional settings and among enthusiasts, and budget isn't your primary concern, the Gibson could be a fantastic choice.
On the other hand, Eastman guitars like the SB59 offer excellent craftsmanship at a more affordable price point. They are often praised for their build quality and tone, which rivals many high-end American-made guitars. If you are looking for value for money or are on a tighter budget but don't want to compromise on quality, the Eastman could surprise you pleasantly.
Ultimately, it would be best if you could try both guitars in person. How each guitar feels in your hands and responds to your playing style should be a significant factor in your decision. Remember also to consider what specific features are most important to you in a guitar as this can greatly influence your satisfaction with the instrument chosen.