No opinion on a brand as, sadly, I don't own one.
But you are advised to hire a licensed electrician to check out the wiring and do the installation. And do make sure it's a
licensed electrician; many who hire out as an electrician are not licensed.
And sadly, prices vary widely on this sort of installation. If the electrician wants to charge more than $300-400, then get a second and/or third estimate before you have it done. We've seen reports of charging $1000 or more, which is ridiculous even if the electrician has to run a new circuit out from the breaker box.
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In many jurisdictions a home owner can do the work if they pull a permit. Ultimately the work gets inspected. It's not exactly rocket science but if you feel uncomfortable around electricity by all means hire a pro. As far as cost it really depends on how much labor is involved. It took me around 6 hours (and I know what I am doing)to install my new circuit with new sub panel, having to go through concrete and finished spaces, I fully expected that if I hired an electrician this would have been an easy $800+ bill. Its really too hard to generalize on cost, it depends greatly on your individual circumstances.