Virgin Mobile USA has unveiled new Monthly and Pay As You Go Plans Without Annual Contracts this week. With no annual contracts, Virgin Mobile USA allows its more than 5 million customers to change plans at any time without hassle or extra charges.

Virgin Mobile USA now offers include 7 p.m. Nights and Weekend Minutes (500 minutes for $24.99, e.g.) and Unlimited 7 p.m. Nights and Weekends for just $49.99. Its $34.99 monthly plan gives customers 300 Anytime Minutes per month as well as 1,000 Nights and Weekend Minutes that begin at 7:00 p.m. instead of the usual 9:00 p.m. for calls to anyone in the U.S.

Virgin Mobile USA's recurring monthly plans now feature discounted Messaging Packs, which cover email, IM, text and picture messaging. For just $10 per month, customers on these plans also get access to Unlimited Text & Messaging. Other wireless offers, for example, require up to twice that amount and don't include all types of messaging.

The new Pay As You Go Plan now has the value of Roll Forward Minutes. Up to 5,000 unused minutes on the Virgin Mobile USA Pay As You Go Plan automatically "roll forward" (or carry over) when a customer buys a new Minute Pack within 30 days of their last Minute Pack purchase.

And Virgin Mobile USA offers options with better per-minute rates than many of its competitors. This includes prices as low as 5-cents per minute when a customer on the new Pay As You Go Plan buys the $50/1,000 Minute Pack.

Popular Virgin Mobile USA Top-Up cards are now more directly aligned to specific minute values for customers on the Pay As You Go Plan. For example, $20 equals 200 Anytime Minutes, $30 equals 400 Anytime Minutes and $50 equals 1000 Anytime Minutes, with purchase of the associated Minute Pack on the new Pay As You Go Plan.