Nithi & Waterstone Legal were extremely efficient and helpful with the conveyancing for my first home purchase, which was completed in less than 3 months ahead of the SDLT deadline. I felt that some chasing/reminding was required to keep things on track (though this might be true of all solicitors), but Nithi was generally easily contactable and gave really quick and helpful responses to any questions, and completed tasks very efficiently as well.
There were a few very minor issues with inaccuracies and communications with the firm as a whole, but any issues were quickly resolved. This was around the middle-to-more-expensive side of quotes I received (including a refundable £600 expedition fee to meet the SDLT deadline), but was definitely worth it for a quick and mostly hassle-free process. I'd definitely recommend Waterstone Legal and especially Nithi.