Do you have a real estate rental company? This domain would be perfect.
Tier 1 Aged domain - generic or brand. The domain rentcheck.com still retains its original registration date of 1995; an exceptional advantage for SEO purposes. Valuable keywords: "rent" and "check" are high value keywords, as well as the combined "rent check". Memorable and easy to remember. Uses the desirable .com extension. Bonus: rentcheck.biz included.