I can't recommend any because I have no idea what "nice and sexy" mean to you. Nor, I'll bet, would you find three clients who all agree on what those mean in a typeface.
Beware the urge to change something just because you're bored. It's not a reason to change. If the customers are bored, that might be a reason, but sameness has advantages when it comes to communicating a simple idea like a number. Get too original, and your choice of typeface can distract from the message -- always a bad thing unless your typeface is the message.
Choose a face because it is readable and because it fits in the context of the text face and your overall design. Tall and skinny for a tall, skinny price list, fat or extended for a wide layout with a wide-body text treatment, boring and conservative for an annual report or accounting summary. A piece designed to look like a 19th Century advertising flyer and illustrated with woodcuts would probably look best with a Cheltenham, but that would look thoroughly out of place in a high tech flyer.
You should be able to articulate your design choices, not on the basis of subjective "feel" or vague "this works for me" criteria, but considerations that make logical and practical design sense.
You can have plenty of fun doing it, but don't make a sense of fun or "sexiness" a reason in itself unless it fits the message of the piece you're designing.
