I was looking to buy light and small practice amp that I can carry everywhere, and I saw Randall WH40 for a reasonable price that I will soon be able to pay (unless they sell it, since this one is the last there is to buy in my country!). Can someone answer some of these questions:

1. Does anyone know its dimensions, and weight? How about the sound quality? This is a Dimebag amp, and supposeably it has that "Dime" channel that I am not sure that is very good on this particular version. Different people say different things, and I am not sure if it is worth to travel across the country just to try it. Any thaughts?

2. Also, I would like to know your oppinion about Randall RX20D and RX30D, and their dimensions and weight.

3. The specification for RX20 says it has 10" Celestion Tube 10 speaker. Does that mean that I need to wait for it to warm up before I get to use it, and that I will have to replace some parts freequently (I`m not realy sure what is a tube speaker, but I am sure this is a solid-state amp)?

4. And since I allready have one 30W practice amp (that is REALY heavy, but has 10" speaker), does that mean that RX30D wich has 12" speaker, but same wattage, would be louder?

5. And last thing: are digital FX on this two units worth something, or they are just some basic low quality effects made only for pracise purposes?

If anyone owns one of these three amps, please help me before that last WH40 is gone!

P.S. What does it mean if amp has "effects loop"?