Well, I hate to get into a debate over this but since you opened the door let me make a few points - but I will not belabor with additional posts, I think my comments were pretty relevant. And I do appreciate what you are trying to accomplish.
But, the terms you have selected are not well defined and they do not lend to a more objective or fair evaluation than what has been posted so far by many - subjective and personal comments.
Quality: the quality of the products manufactured by the vendor/supplier (would apply to the likes of a few such as Comptech, Dali, RM, Zublin, Basch, Carbotech, KHrant .....) or quality of products retailed as a third party front store (and there are quite a few of those ....)? In the latter case the "quality" is less relevant IMO as you are shopping for a product most likely available in many other retail stores.
Price: If technical expertise is included in the pricing does that count or are you shopping for the lowest price? Check Andie Lin's comments on this forum re this issue when he was semi jokingly challenged on his pricing of brake related products. [By the way I agree with Andie's post since that is is his livelihood ...... ]
Service: Put a realistic parameter such as, are your e-mails or phone calls returned within say 48 hours, do the shipments arrive on time, are you kept apprised of the status of your order, waht is the return or refund policy, ....... otherwise what might be acceptable to one would be cause for another to post a flaming complaint ........
And finally, what is the use of having a quick e-mail or phone call response time, great price, good quality (whichever definiton or criteria is used), and I will toss in overnight free shipping for ...... if the product sold to you does not: (a) meet your needs because the vendor just wanted to sell the item for revenue rather than advise you what might and might not work for your application; (b) the product does not work as purported ..... but the workmanship and finish is top notch!!
All three of your criteria would have been met yet you would surely rate this vendor/supplier as poor unless you accept and abide by the principle of caveat emptor, a priori.
And finally, would you care to identify yourself or include your e-mail .....