RapidSSL is a 128 / 256 bit single root SSL certificate. RapidSSL owns the root used to issue RapidSSL certificates making it a stable SSL offering. Rapid SSL provides an affordable entry level SSL certificate in 128-bit encryption and is ideal for low volume / low value e-commerce transactions.

RapidSSL offers:

• True 128-bit SSL encryption
• Compatible with 99%+ of all browsers
• FREE "Secured by RapidSSL " site seal

If you have a low volume or development website with less than 50 transactions per week and an average transaction amount of less than $50, go with the RapidSSL