Need help quick

Terry or any SUMP PUMP experts out there please help.

I called several plumbers inquiring of replacing an old sump pump (7 years old) A few plumbers suggested the ZOELLERS brand. I want a backup system in case of power outage so I asked for the complete price with replacing main system, battery back up and a separate backup pump runs off the battery.
The plumber quoted me $1200 and said best he can do is $1000 because it will take 3 to 4 hours doing the job. He also said the back up battery (marine battery) is about $175 so that's why including labor runs about $1200....

Now I saw on lowes.com , they sell Basement Watchdog Combination Primary and Battery Backup Sump Pump System
http://www.lowes.com/lowes/lkn?action=productDetail&productId=209260-84862-DFK961&lpage=none

for $278.... compared to plumbers recommended brand of $1200.... should I opted for the Watchdog or play it safe with the Zoellers.

I don't mind spending the money, but just don't want to be ripped off. At the same time, I want to make sure Zoellers will work 5~8 years like the current one I have (a builders grade but last 7 years so far...)

1. Which route should I go? 1200 zoeller or 278+labor watchdog brand
2. Like the old saying, if it isn't broke, don't fix it... should I wait until the current pump gives out?
3. Does it really take 3 to 4 hours to do the job??? all the piping already done.....

thanks much!

James

I like the basement watchdog. I've installed mostly basement watchdogs.


I install the zoeller N53 with detachable switch.

The fact that those pumps are preassembled is pretty cool. Fitting all those together are time consuming.