Help! What do I write next?!

I've been a very lazy boy and haven't put any effort into pitching the last novel apart from a couple of tentative queries a few weeks ago. I got a nibble or two, but no cigar. Now, having given the novel one more going over, I'm ready to start querying seriously.

In the meantime, I've recharged my batteries after not writing much of anything for a while, and I'm ready to have another go. Problem is, I can't decide what to write next. I've got four pretty solid ideas (actually, I've got more, but these are the one I want to tackle) that I'm torn between. Two are deliberate attempts at something more commercial, while one is very dark, and the fourth plays into my own personal interests (it's got guitars in it!).

So, I'd like some help. I'm looking for some volunteers to read the short 'pitch' I've written for each and see which one, if you were in a book shop, you would take to the counter. If you'd like to take part and earn my eternal gratitude, just email me at info@stuartneville.com (or leave an email address in the comments) and I'll send you back a link to where you can read all four.

I'll see how it goes, but if people think that's too much kerfuffle sendng emails about, I'll post the link temporarily in the comments trail.