InstantSSL versus RS' QuickSSL

They both cost the same [approximately ... rackshack does charge sales tax], and I think I read that QuickSSL has less acceptance [89% versus 95% i believe as claimed on their sites]. So any difference between the two?

Also, for those that have bought either and knew about both, why did you choose the one you went with?

Thanks for any help

has the higher acceptance rate, tho I think I read the instantSSL is catching up. Both are around the 95 to 97% rate now.

QuckSSL has been around longer, I use quickssl and have had no problems at all.

I'd get the Comodo one unless you can afford Thawte.