Best Checkout Add On?

I am interested in purchasing a 3rd party add on for checkout.

Any input would be appreciated especially if forum members have

used an add on by either of these companies.

These seen to be the only the available options that are updated for the

current version of CS CART Ultimate. I will eventually be using this on 3-4 storefronts.

One Page Checkout CS-Commerce Software Solutions

One Step Checkout - Simple Layout   Cscartrocks

I use One step checkout - Flat layout 3 columns by

Works good for me & support is great!

Thanks - I appreciate the input.