Hi, I want to get a numeric keypad for my penryn MBP (with no numlock). My main reason is for use with music software - primarily Sibelius (music notaion program) and The Amazing Slow Downer (music transcribing aid) - which extensibly use the number pad for keyboard commands. I purchased the Interlink VP6270 with great hopes. It is the only keypad, that I can find, that has Bluetooth - no USB ports or wires to mess with. Unfortunately, it doesn't quite work right on the Mac. It's fine if all you want to do is enter data (type numbers, etc.); but for software that need the specific key codes of the number pad - ie, '5' on the number pad sends a different signal than '5' on the top row of the main keyboard; and they perform different commands in these programs - the Interlink fails. It sends the "top row 5" instead of the "keypad 5" on a Mac, although it apparently works properly on a pc - weird! Interlink claims it's Mac compatable - I'll be generous and say that they're half right. Big disappointment; it goes back on Monday. I've found 5 other candidates: 1) Targus USB Numeric Keypad One reviewer stated that even though this product was labeled for Windows only it worked fine on his MBP, but he only mentioned data entry so I suspect the same problem would occur with the key codes as with the Interlink (in which case at least the manufacturer was more honest about Mac compatability). However, I could be wrong, so let me know if that's the case. 2) Kensington Pocket KeyPad/Calculator This is the one sold at the Apple Store. It seems to work, but gets mixed reviews (Check it out here: http://store.apple.com/us/product/T7340LL/A). It does have a wireless version, though not Bluetooth, so you still need to use a USB port. 3) 18-KEY Genovation Micropad 631 USB Numeric Keypad 95/98/W2K/NT/MAC I read a pretty good review of this by a Sibelius user. He said it was not perfect - a couple of the key codes were wrong - but he was able create work-arounds in Sibelius without too much trouble. Still, I'd prefer a "perfect" keypad with all correct key codes. 4) Adesso 19-Key Mobile USB Numeric Keypad with Retractable Cable ( AKP-150 ) Good reviews by Mac/Sibelius users, but similar to Genovation (#3 above) with one reviewer saying that a couple of the keys aren't recognized but it works for MOST of what he would like it to. Again, I'd prefer a "perfect" keyboard, if one exists. 5) Key Ovation Goldtouch Apple Compatible Numeric Keypad Hub This is billed as a Companion to their ergonomic keyboard (w/o keypad), so I'm not absolutely sure it will work with a laptop although I can think of no logical reason why it wouldn't (but after my experience with the interlink I can't nessarily trust my sense of logic). It seems that it may work better because it is made exclusively for Mac - no compatability issues. I also like the fact that it does *not* double as a calculator - instead it has 22 keys (some others only have 19) and can be switched to use 'home', 'end', 'page up', etc - something that I could find convenient at times. I just hope there is a light to indicate which mode it is in (unlike the Kensington - one of the complaints in those "mixed reviews"). So, in conclusion, I hope this info helps some of you and if anyone knows more or has opinions, experiences, etc with any of these keypads or knows of any other good keypads, please post. I want to order one in the next couple of days because I'm going on a road tour starting Oct, 7 (this also makes sending back another unsatisfactory keypad difficult). Thanks!