A bit of a Busman's holiday there then . Maybe I should have added in the post that the only people who give a damn about brands and types of equipment are either other DJ's or those involved with or have vested interests in similar occupations (band members, roadies, engineers, disco equipment retailers etc).
I still find it strange and very tiring in some ways, in that some Dj's and their like will always question and forward assess each other on the merits of what equipment they use or whether they are a Digital DJ or CD / Vinyl DJ rather than their actual entertaining skills, and our industry does seem isolated in marking territory and the levy of criticism based on these facts, rather than reputation and more importantly client feedback
Personally, i'd put more priority into whether the DJ had suitable back up equipment available, rather than what brand of equipment he used for his main rig, because you cannot rely on any brand and people tend not to be able to dance in silence. Having suffered a complete and total failure of a system whose brand name gives immense orgasms to certain musical fraternities and whose reliability (apparently) is beyond question then I was certainly glad that my back up was there with me. Had I not have had it in place, I could have lost business and loyalty from a venue to the cost of almost half of my annual income.
Agreed that back up equipment is critical. if you don't carry it you are asking for trouble at some point. it is difficult to accept someone is professional unless they carry back-up gear.
Sometimes but not always the high-end equipment is better. Personally, I have found that Denon & Pioneer mixers sound better than the basement budget equipment. The same goes for speakers as well. Whether it's worth the extra money and whether it will enhance your roadshow is questionable, because you stiil need to use the gear properly.