Personally I think you have to go after what you want!
I was almost in this position. I had a vac scheme last year for a great firm, but it was in a regional office. The scheme itself was okay, but I realised this office didn't offer most of the practice areas I wanted to do, the pay was significantly lower than London, I also didn't love the city it was in, essentially really just not what I wanted.
I decided on the scheme itself that I wouldn't take any TC offered and would just use it as good experience. In the end wasn't given the offer anyway so didn't have the make that decision. But now in this new cycle I'm so much better prepared, I've been so much more focused in my applications, I've made a total of 7 applications so far to firms I really like, and I've got 3 AC invites! Still in the process for 2 of the others as well, with 2 rejections.
So of course I do not have a TC yet, but I'm feeling really good about this cycle. If I am unsuccessful maybe I'll regret not trying harder in that vac scheme last year, but either way it would've been wrong for me. You have to weight up how much of what you want the firm can offer you.