UPDATE - After being really happy with the firm for not charging to review the issue (I have used them multiple times in the past), I was billed for $156 for an "hour's" worth of "work". In reality, Dave was over for 30 min and he did an inspection and identified there was no leak from the bathroom and I should check out the roof. I feel this was incorrectly portrayed to me when I first made the call when the dispatch mentioned they charge only if they do the work and not for coming out and seeing the issue. On questioning the price I was forwarded to George (owner) who decided to give me a discount and charge only $99 for the inspection to which I agreed. However when I received the invoice, they added $12 for shop fees even though no work was completed. For $12, this company has lost my future business as they have incorrectly portrayed a service and charged more than other plumbing firms had quoted me to come out and look at the issue ($80 vs $116). I believe this is a reflection of the company and not against Dave himself, as he is a very competent plumber (he's been to my house multiple times in the past).
Over the weekend we found our ceiling was leaking a little water and I called up a few different companies to see if they could come and check it out. Instant Plumbing was one that did not quote me any "dispatch fee" and clearly stated they will come and review the problem and if it's something they can fix they would charge a $159/hour (almost all other companies wanted $70 dispatch fee to even come and take a look at the problem + any additional costs on top of that).
Dave drove out same day and checked the problem and was very meticulous and careful to not cut hole in the ceiling any larger than needed to be; little things like that go a long way in my opinion. He figured it was nothing to do with indoor piping and was probably coming from the roof and advised me to seek a roofing expert. He spent about an hour at my house and checked other rooms as well and showed me where the problem could be in the roof.
I know this review is long but I wanted to pass on my appreciation to Instant Plumbing and especially Dave for being a professional and keeping the customer on the top of his mind.
I would definitely recommend Instant Plumbing (and especially Dave) - FYI, I have also called them three times in the past with also excellent results (I believe Jeff has previously come to my house along with Dave as well).