Imo the Bermuda is the stronger frame. Factory made, wishbone, etc. If you run 13.4ish then file the Bermuda's dropouts slightly and carefully and run slammed so that your wheel will be in the same spot as it would on your BTM.
Do you feel as if you have 1/4" to spare? Its not a huge difference, so if you already feel super roomy on a 21" maybe it will be better for you and still have the room you need.
Also, look into bb heights. I switched from 11.5 to 11.8 and it seemed SUUUUPER twitchy at first, but it has opened up alot of clearance for me on grinds and makes me feel like I hop higher (I dont though) which has kinda boosted my confidence for alot of things. After a few days I got used to it and all was well. Not sure if it negatively or positively effects manuals.
@MaximusBikes - how can you say the BTM has better geo? How do you know what the OP prefers?
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