There is always a new smartphone every month. Month after month after month. If you're worried that your phone will be outshone the next month, its a guaranteed. There is going to be phones more powerful than the Droid X.
But if you buy phone A later, there will always be phone B, and then phone C. There is going to be plenty of new phones coming to Verizon and every one of these carriers.
If you don't give a fracking crap about obsolescence, the Droid X is a very powerful phone with lots of memory and it will last you for a while. I do have to say, this model has been out for months and new phones like the Thunderbolt and the dual core Droid Bionic due in the 1st half of 2011. The Thunderbolt may come out this month.
So the question is on the following:
How important is 4G for you? Lots of 4G phones on the pipeline but expect a premium.
How important is having dual core for you? Dual core phones are coming, the first one for Verizon maybe the Droid Bionic.
How important is having the latest Android OS update is to you?
Please note the following: its likely if you go with 4G, an additional premium will be added to your contract.
If there is the latest technology, the last generation though can be available in decent prices. Thus the latest phones you have to pay higher prices. An older phone like the Droid X is likely to be discounted. In fact, the initial prices of the Droid X is very cheap nowadays. You won't get bargain prices with the new phones until they in turn, are getting "old" in the market. So how important is pricing is for you?
If you like a little that is "more" with the technology, there is also the Droid 2 Global with a 1.2GHz processor.
Personally, the Droid X is a tough, tank like phone. I am very impressed with the body and the way its constructed. New models are not necessarily better with body construction. The screen is large, clear and sharp. The large internal phone memory and the 1Ghz processor made with the 45nm process will last any user humming for a long time. It is definitely quite a leap over the original Droid. I can see myself using one, but i already have a Droid Incredible.
The new Verizon Android for the month is likely to be the HTC Thunderbolt. CPU Power and specs wise, roughly equal to the Droid X. But it has 4G LTE connections. The HTC Sense interface looks better than Motoblur. How much HTC vs. Motorola as brands weigh for you.
2nd quarter of 2011 maybe the release of the Droid Bionic. Motorola also, 4.3" screen with dual core nVidia Tegra 2 processor and 4G LTE. Yes, its a power gorilla of a phone.
I only mention this two as these are the immediate ones with Verizon right now. The field grows much bigger if you involve models with other carriers, ergo like the Motorola Atrix of AT&T.