All Vendelas are created equal, all suppliers are not. I strongly encourage you to attempt to contact others who have purchased from the vendors you're considering.

Altho all Vendelas are inherently identical, variations in culture (ie, conditions under which they're grown -- light intensity, temperature, growing medium, type/amount of fertilization, etc) can produce differences in appearance. Usually, such differences are subtle.

I'd think that the most important elements in the purchase of cut flowers shipped from a distance would be the treatment they receive at the source, packaging, speed of shipment and how the flowers are treated by the purchaser immediately upon receipt.

Word to the wise: As you visualize what these roses will look like on your big day, try not to vizualize roses at their peak degree of openness, or roses that are in varying degrees of opening up. Visualize buds that are beginning to unfurl.

'Vendela', like most florist varieties of roses, appears to have great substance but no fragrance.

Here is a link that might be useful: 'Vendela' @ HMF

With florist roses you can have the exact same variety but there will be a big difference in quality.

Cut flowers are exactly like apples or peaches...it's a crop. Out of this weeks crop, the biggest most perfect fruits go to the stores that pay more and then sell for more. The stores that pay less and sell for a little less get the smaller ones with bruises here and there.

I remember living in Manhattan, where the florist roses were unreal, eyepopping--two or three times the size you see here...fully closed rosebuds the size of baseballs, all of them opening to absolute perfection--but at 10 or 20 times the price of what is available here!

The trick is finding the reasonable price on decent quality.

If it is desperately important to you, order a few from both suppliers right now far before your "big day" and compare the quality. Then you'll know.

Speaking as an old hardened veteran of marriage, the wedding is a few hours...the marriage the rest of your life...remember to keep the "big day" in proper perspective. :)