OK, you need to ring them rather than email, I think. Just becuase they might ask you things you didn't think to include in teh email and it will be quicker.
They will all do the same thing, with varying speed. It's not like a divorce where you need a rottweiler of a Solicitor so you can safely go for a cheaper solicitor without getting a lesser service IMO. The firm I have instructed is over £300 cheaper than another firm I rang: I've worked at both places and know that the cheaper one is just as good, if not better, than the dearer lot. I'd avoid the "licenced conveyancer" firms TBH as I know a few licenced conveyancers and I wouldn't trust them to make me a cup of coffee, let alone buy me a house (sorry, but its true).
looks like a well established firm but could be ££
I like the look of htis lot - been establisehd since 1880 and look to do a lot of conveyancing
If you'd like me to cast an eye over any website from firms you have considered buda, just let me knwo - I've worked in Solicitors offices from leaving school and know my stuff
Also, bear in mind that you don't HAVE to use a solicitor who is local to the house you are buying, a solicitor anywhere in England will be able to do the conveyancing so if you already know of a decent firm, don't hold back in instructing them.
HTH pest