Nautica Voyage or......... Perry Ellis Red 360
Both are decent frags for the price, but I would go with Voyage. If you have Aqua Di Gio, you may not want Perry Ellis 360 Red (similar scent).
I'm gonna be wearing Allure Homme Sport, if that makes any difference. One of these will be on the side.
None of those, for me it's allure home sport or dior homme sport
versace eau fraiche gets a lot of usage for me in the summer
Of the OP two choices - Nautica Voyage
I would go with the Perry Ellis, simply because it's the most dissimilar to Allure homme sport, which you said you plan to have as your primary summer scent. I think the Red gives you a better change of pace scent, though both the options you listed are cheap enough to warrant a spot in your rotation.
Another for PE Red.
DHS is also my favorite summer fragrance
PE Red for me. Voyage is easily cloying