I tend to lean towards traditionally published work because anyone of any skill can publish a book if they have the money. A traditionally published book tells me the author has some skill (or has just published what someone wants to read, so it's not totally fool proof). Having said that I have read some traditionally published books I was too embarrassed to even give to a charity shop and self-published ones of a high standard. You can't always base a book on the reviews because even some of the best books get people that don't like them but reviews are a good place to start.
I use Good reads to book hunt, as the search is easier. I find ones a like, read a mix of positive and negative reviews and if I still like the sound, I write them down, head over to Amazon, read the sample and possibly order if I think the writing is good. If a book has anything below fifteen views I pass it over (unless it was recently published like in the past year). Those low views tell me the author went wrong somewhere, especially if those views are average or below average. I also notice many books with low views tend to be full of people who gave reviews because they were sent a free copy, so can I trust their opinion? And if the reviewers give only 2 stars that's not good news, these people aren't going to lie with a reputation to keep. First published book I'll give it a go anyway but if their 2nd and 3rd are low then I'll miss them completely.