Guidance on settings

[invisibleadjunct]

First time posting so please excuse any blemishes (sic)

This is probably not the best way to go about this, but I am having trouble identifying which vendor''s settings are the best. I am looking to buy an engagement ring for my girlfriend with a princess cut center stone(her choice, I know she wants a princess cut) with sidestones (channel) setting and I am unable to decide which one is the best. Especially since the ones I really like are online only (and they all look good online). So I am hoping to benefit from the wisdom of folks here to try and help me decide. Here the ones to give you an idea of what I am looking for:

Oh and she does not want to see the ring, so cannot ask help there.


James Allen: http://www.jamesallen.com/engagement-rings/settings-with-sidestones/Thin-Channel-Set-Engagement-Ring.html

Bluenile: http://www.bluenile.com/platinum-diamond-eternity-ring-setting_5858?filter_id=1&collection_id=239

Excel Diamonds: http://www.exceldiamonds.com/-Engagement-Rings-5/Diamond-Accent-Engagement-Rings-12/Tiffany-Channel-Diamond-Engagement-Ring--963.html

washington diamond: http://www.washingtondiamond.com/365597-Channel-Set-Diamond-Setting?sc=23&category=28052

Can anybody comment from personal experience on these settings or otherwise help me make a better decision.

Also, it seems harder to find a lot of settings with sidestones and a princess cut diamond. Is there a special reason for this ? Also feel free to voice any other thoughts that you may have based on what you see,

I know this is probably all over the place, but I hope to pare down my choices with your kind help.

Thanks again !