I currently have a solid decathlon bike I got for €1200 on the bike to work back a few years back that has served me well: https://www.bikeradar.com/reviews/bikes/road-bikes/btwin-ultra-920-af-review/
I'm eligble for the BTW scheme again and I'm looking at what my upgrade options are. Do I buy something completely new and relegate the BTwin to commuter? Or maybe upgrade a few bits like getting a carbon frame? It doesn't feel like there's a massive amount of value in the market right now and looking at whats on sale it looks like I'd probably need to spend a good 2-3k for any noticeable upgrade.
Any ideas or suggestions?