What EMD Meta Title should we use?

[TT_Vakantiehuizen]

Situation: Recently I encountered a Meta Title issue for my company websites.
This Dutch company has four websites on one server. Three closely related EMD(Exact Match Domain) websites and one overarching website. (Holiday homes rental websites)

Vakantiehuizen-Verhuur.nl (overarching) 
Vakantiehuizen-Frankrijk.nl (EMD in EN: holidayrentals-France.nl)
Vakantiehuizen-Italie.nl (EMD in EN: Holidayrentals-Italy.nl)
Vakantiehuizen-Spanje.nl (EMD in EN: Holidayrentals-Spain.nl)

Question:
What would be a preferable Meta Title for the EMD websites (homepage/subpages)? Keep in mind that the domains are EMD. The homepage will target the most important keywords and should not compete with subpages.

Options for the homepage (translated from Dutch to English):
1. Holiday Rentals France | All holiday home rentals in France in a row!
2. Holiday Rentals France | Holidayrentals-France.nl powered by Holiday-Rentals.nl
3. Suggestions?

Options for the subpages:
1. Holiday Rentals Normandy | Holidayrentals France
2. Holiday Rentals Normandy | Holidayrentals-France.nl
3. Suggestions?

And concerning the keywords in the beginning; is it wise to use both plural and singular terms in the meta title? For Example:
Hotel New York. Best hotels in New York | Company Name

[TakeshiYoung]

The usual format I follow is:

Homepage: Site Name, Additional Keywords
Subpages: Page Name | Site Name

I usually try to avoid keyword stuffing in titles, but it can be effective for improving rankings. I would test several variations of your title and see which ones help drive the most traffic. It's a simple thing to change, so should be an easy test.

[TT_Vakantiehuizen]

Thanks Takeshi,

We will indeed test some different Meta Titles. We were only doubting if we should include our website name(url) in the Meta Title.

Gianluca Fiorelli, confirms that it is wise to do so here: http://moz.com/community/q/what-emd-meta-title-should-we-use-and-what-about-getting-links-to-the-same-c-block-ip

We will test some plural/singular terms in the Meta Title to see if this makes the different.